Allotrope Relation Ontology (WD/2026/03). This working draft contains many legacy relations used in previous AFT versions, these should be no longer used.
The measured property of the result. [Allotrope]
2024-09-12 Added [Allotrope] attribution.
A qualifier on a property that restricts it to a certain interpretation or aspect that is not a restriction on a class or role. [Allotrope]
The calculated property of the result. [Allotrope]
calculated blood gas analysis result for a given temperature.
2016-01-07 add concept to describe property coordinations [Allotrope]
2016-04-06 remove domain restriction to allow annotation directly on property
A relation between a bearer and a role that is a function assumed in a particular situation. [Allotrope]
"pump A" is a class of pumps that has the role "with identier A". The role can be modeled as an OWL value restriction on the property dct:identifier.
2024-09-12 Added [Allotrope] attribution. Fixed typo in definition.
An annotation property that is used to mark that an object or data property is only defined for grouping purpose within the taxonomy. [Allotrope]
2016-01-25 add concept to describe property coordination [Allotrope]
A relation to a class of individuals. [Allotrope]
2016-01-25 add concept for property coordination [Allotrope]
The primary class is the class that captures the main aspect of a thing or the system. [Allotrope]
In the coordinated class "water pump", "pump" is the primary class and "water" is a shortcut for the role "pumps water".
A relation to a class of entities that is part of a primary class that is measured or described by a property. [Allotrope]
In the coordinated property blood ethanol mass concentration, blood is the primary class (the system) ethanol is the analyte class and mass concentration is the base property. [Allotrope]
2024-09-12 Add missing [Allotrope] attribution.
The property that captures the property of a coordination (n-ary relation). The coordinated property of a coordination is a subproperty of the base property. [Allotrope]
A coordinated property is a property that represents several aspects of a base property it is derived from. The property coordination this annotation property points to, describes these aspects. [Allotrope]
"device id" is a coordinated property of the base property "id" with the class "device".
A property which is referencing something. [Allotrope]
Green Book, 2nd ed.: IUPAC Quantities, Units and Symbols in Physical Chemistry. Second Edition, Blackwell Scientific Publications, Oxford, 1993
PAC, 1996, 68, 957 (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996))
2024-09-12 Added license and rights fields.
Normal force acting on a surface divided by the area of that surface. [IUPAC]
The pressure of a gas equals to the force that it exerts on the walls of its container.
Green Book, 2nd ed.: IUPAC Quantities, Units and Symbols in Physical Chemistry. Second Edition, Blackwell Scientific Publications, Oxford, 1993.
PAC, 1994, 66, 533 (Standard quantities in chemical thermodynamics. Fugacities, activities and equilibrium constants for pure and mixed phases (IUPAC Recommendations 1994))
For a mixture of gases the contribution by each constituent is called the partial pressure p_i = x_i p, where x_i is the amount fraction of the ith constituent and p is the total pressure. [IUPAC]
The partial carbon dioxide pressure. [Allotrope]
The pO2 (partial pressure of oxygen) reflects the amount of oxygen gas dissolved in a solution. [Allotrope]
The gas pressure of the collision gas used for collisional excitation. [PSI-MS]
The pressure of the filtrate. [Allotrope]
The pressure that is applied during injection. [Allotrope]
The pressure control mode determines the regulation of the partial pressure. [Allotrope]
2016-04-25 move under uses solvent [Allotrope]
The pressure controlled solvent is the solvent that is pressurized to a certain partial pressure. [Allotrope]
The pressure of the retentate. [Allotrope]
The pressure applied during rinsing. [Allotrope]
The measurement of pH, the negative logarithm to base ten of the hydrogen ion activity in a solution. Operationally the pH of a solution X, pH(X), is measured relative to that of a standard reference solution, pH(S), and defined as pH(X) = pH(S) - (E(X) - E(S))/(RT/F)ln 10, where E(X) and E(S) are the electromotive forces measured in cells containing the solution X and the reference solution respectively. [CMO]
The force per unit area attributable to the carbon dioxide, a colorless, odorless, incombustible gas formed during respiration and composed of one atom of carbon and two atoms of oxygen, dissolved in a specified volume of blood, defined as the force per unit area exerted by carbon dioxide in a mixture of gases in equilibrium with such a sample of blood at the same temperature. [CMO]
arterial carbon dioxide partial pressure (pCO2)
carbond dioxide partial pressure at temperature
Partial pressure of carbon dioxide at a given temperature. [Allotrope]
The force per unit area attributable to the oxygen, the chemical element with atomic number 8 which is the essential agent in the respiration of plants and animals, dissolved in a specified volume of blood, defined as the force per unit area exerted by oxygen in a mixture of gases in equilibrium with such a sample of blood at the same temperature. [CMO]
Partial pressure of oxygene at a given temperature. [Allotrope]
Relative humidity (abbreviated RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at the same temperature. Relative humidity depends on temperature and the pressure of the system of interest. [Wikipedia]
This property relates a certified thing such as a material or a process with its certificate. [Allotrope]
In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration. [Wikipedia]
event concentration expressed as events per unit of volume in flow cytometry
A crystal, crystalline phase is a solid material whose constituents, such as atoms, molecules or ions,are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. [Wikipedia]
Identifying the crystalline phases is the aim of a x-ray powder diffraction measurement.
The extend of something from end to end. [Allotrope]
For any physical object, the diameter of the object is the same as the diameter of its convex hull that is the supremum of the set of all distances between pairs of points in the object. [Wikipedia]
PAC, 1985, 57, 105 (Names, symbols, definitions and units of quantities in optical spectroscopy (Recommendations 1984))
PAC, 1996, 68, 2223 (Glossary of terms used in photochemistry (IUPAC Recommendations 1996))
Distance in the direction of propagation of a periodic wave between two successive points where at a given time the phase is the same. [IUPAC]
The wavelength of the electromagnetic spectrum used in the detector. [Allotrope]
The path length is the length of the path that the light travels through a sample. [Allotrope]
The allowed cell diameter defines the range of diameters for which a particle is counted as a cell. [Allotrope]
The average diameter is the mean of multiple measurments of a straight line passing from side to side through the center of a body or figure. [Allotrope]
ViCell average diameter of all cells (live and dead).
The live diameter is the diameter of viable cells of the sample. [Allotrope]
average live diameter as reported per image by a Nova CDV
The diffracted beam path radius is the distance from the sample surface to the detector. [Allotrope]
The pulse length is the duration of a pulse in units of time. [Allotrope]
PAC, 1996, 68, 957 (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)
Physical quantity which can be ascribed to any material object and which gives a measure of its quantity of matter. [OIML]
The observed mass divided by the difference between two masses that can be separated: m/dm. The procedure by which dm was obtained and the mass at which the measurement was made should be reported. [PSI-MS]
Smallest mass difference between two equal magnitude peaks so that the valley between them is a specified fraction of the peak height. [PSI-MS]
Mass resolution such that it is possible to clearly distinguish a peak corresponding to a singly charged ion from its neighbors 1 u away, usually with no more than 5–10 % overlap. [IUPAC]
This term is most frequently used to describe resolution obtained using a Paul ion trap or a transmission quadrupole mass spectrometer. [IUPAC]
Differences in overall detection sensitivities for ions of different m/z values in a mass spectrum, caused by variations in ionization efficiency, transmission efficiency through the interface between the ion source and the analyzer vacuum system, analyzer, and detector response. [IUPAC]
Difference between the nominal mass and the monoisotopic mass of an atom, molecule, or ion. [IUPAC]
Mass defect can be a positive or negative value dependent upon the elemental composition. [IUPAC]
Mass change is the difference between the mass of something at two points in time. [Allotrope]
percental mass change as measured by DVS
Molecular mass or molecular weight is the mass of a molecule. It is calculated as the sum of the mass of each constituent atom multiplied by the number of atoms of that element in the molecular formula. [Wikipedia]
Mass of an element or chemical compound divided by its amount of substance. [IUPAC]
Amount of substance has historically been referred to as number of moles.[IUPAC]
Weighing value that is obtained when a weighment is performed under the conditions specified in OIML D 28, i.e. in air of density r0 = 1.2 kg/m3, at a temperature of 20 °C, and using a reference standard of density rc = 8000 kg/m3. [OIML, DIN 1305, DOWT]
Experimentally (high resolution) determined mass of an ion of known charge. [IUPAC]
Accurate mass and exact mass are not synonymous. Accurate mass refers to a measured mass, and exact mass refers to a calculated mass. [IUPAC]
Can be used to determine elemental composition to within limits defined by both the accuracy and precision of the measurement. [IUPAC]
Mass of an ion or molecule weighted for its isotopic composition. [IUPAC]
Calculated mass of an ion or molecule with specified isotopic composition. [IUPAC]
Exact mass of an ion or molecule calculated using the mass of the most abundant isotope of each element. [IUPAC]
Mass (low-resolution) of a molecular ion or molecule calculated using the isotope mass of the most abundant constituent element isotope of each element rounded to the nearest integer value and multiplied by the number of atoms of each element. [IUPAC]
The nucleus/nuclei used in the magnetic resonance method. [Allotrope]
Orange Book: IUPAC Compendium of Analytical Nomenclature. Second Edition, Blackwell Scientific Publications, Oxford, 1987.
The amount of solute to build a saturated solution. A saturated solution which has the same concentration of a solute as one that is in equilibrium with undissolved solute at specified values of the temperature and pressure. [IUPAC]
In solutions, oxygen saturation is a ratio of the concentration of dissolved oxygen to the maximum amount of oxygen that will dissolve in the solution at that temperature and pressure.
The percental saturation of dissolved oxygen is the fraction of a oxygen within a medium compared to the maximum total amount of oxygen that can be contained in the medium. [Allotrope]
The percental saturation of dissolved carbon dioxide is the fraction of a carbon dioxide within a medium compared to the maximum total amount of carbon dioxide that can be contained in the medium. [Allotrope]
The amount of oxygen bound to hemoglobin in the blood expressed as a percentage of the maximal binding capacity. [CMO]
The calculated percentage of saturation with a gas. [Allotrope]
PAC, 1990, 62, 2167 (Glossary of atmospheric chemistry terms (Recommendations 1990))
PAC, 1995, 67, 1699 (Nomenclature in evaluation of analytical methods including detection and quantification capabilities (IUPAC Recommendations 1995))
The slope of the calibration curve. If the curve is in fact a 'curve', rather than a straight line, then of course sensitivity will be a function of analyte concentration or amount. If sensitivity is to be a unique performance characteristic, it must depend only on the chemical measurement process, not upon scale factors. [IUPAC]
A temperature is a comparative objective measure of hot and cold. It is measured, typically by a thermometer, through the bulk behavior of a thermometric material, detection of heat radiation, or by particle velocity or kinetic energy. It may be calibrated in any of various temperature scales, Celsius, Fahrenheit, Kelvin, etc. [Wikipedia]
The ending temperature is the temperature setting of an object at the end of a measurement. [Allotrope]
The temperature of the furnance in the thermogravimetry run. [Allotrope]
The temperature applied during rinsing. [Allotrope]
The temperature corrected for the difference between measured and actual value. [Allotrope]
The temperature compensated partial pressure is the partial pressure that has been corrected for a given temperature. [Allotrope]
temperature compensated partial pressure
The target temperature is the set temperature that must be reached incrementally during a process. [Allotrope]
The target preheat temperature is the set temperature of the preheater that is used for changing the temperature of the sample. [Allotrope]
The starting temperature is the temperature setting of an object at the beginning of a measurement. [Allotrope]
start temperature of a heat cell in a differential scanning calorimetry measurement
The temperature of the sample. [Allotrope]
The time the washing starts. [Allotrope]
The period of time of vortexing. [Allotrope]
The time an analyte spends in the mobile phase. [Allotrope]
PAC, 1993, 65, 819 (Nomenclature for chromatography (IUPAC Recommendations 1993))
The total retention time, T R, is the time of eluent carrier gas admitted to the column between the injection of the sample and the emergence of the peak maximum of the specified component. It includes the hold-up time. In gas chromatography, the time of carrier gas is specified at the outlet pressure and temperature of the column. [IUPAC]
The time per scan is the time interval that is applied to a single scan. [Allotrope]
The thermal equilibration time is the duration of time of equilibrating to a certain temperature. [Allotrope]
The duration of time taken to complete a single step of a process or a step rotation. [Allotrope]
Step time of sweeping over the angle step size, e.g. 2Theta. Unit: minutes.
The time the process was started. [Allotrope]
The start delay is a time delay for the start of the experiment. [Allotrope]
Time required to obtain a mass spectrum (or other mass spectrometric data quantity) such as in a separation coupled to mass spectrometry. [IUPAC]
The rotation time is the duration of time of a full rotation of an object around an axis. It is the reciprocal of the rotational speed. [Allotrope]
The relaxation time T1 is the spin-lattice relaxation time that can be measured by NMR spectroscopy. [Allotrope]
The prescan thermostat time is a time interval that is meant to let the sample acquire a certain temperature before a scan starts. [Allotrope]
The postscan thermostat time is a time interval that is meant to let the sample acquire a certain temperature after a scan ends. [Allotrope]
The postcycle thermostat time is the amount of time that the temperature stays at the final temperature of the last scan before the next scans start. [Allotrope]
The time of mobile phase entering the column between the start of the elution and the emergence of the peak maximum. In most of the cases, this is equal to the total retention time. There are, however, cases when the elution process does not start immediately at sample introduction. For example, in liquid chromatography. [IUPAC]
The needle dwell time is the interval of time from the aspiration until the needle has left the sample. [Allotrope]
The mixing time is the period of time of mixing. [Allotrope]
Migration time refers to the amount of time it takes an analyte to travel through the capillary and reach the detector. [Allotrope]
The date/time of the measurement. [Allotrope]
The measurement duration is the interval of time that covers the total time of a process of measurement. [Allotrope]
measurement duration / end point of 30 seconds
The loop offline time is the interval of time from the injection until switching the loop to bypass. [Allotrope]
The isothermal time is the duration of time of keeping the temperature at a constant value during measurement. [Allotrope]
The ion injection time is the length of time spent filling an ion trapping device. [PSI-MS]
The time of injection into the device. [Allotrope]
The period of time of the injection. [Allotrope]
retention time of an unretained compound
The time of the mobile phase required to elute a component the concentration of which in the stationary phase is negligible compared to that in the mobile phase. In other words, this component is not retained at all by the stationary phase. Thus, the hold-up time is equal to the retention time of an unretained compound. The hold-up time includes any volumes contributed by the sample injector, the detector, and connectors. [IUPAC]
Maximum duration for each collected fraction. [Allotrope]
The exposure time is the duration of time that a sample is exposed to a required action during a process of measurement. [Allotrope]
duration of time that the sample is exposed to incident electromagenetic radiation during spectroscopical measurements
Total time taken to generate the mass spectrum. [Allotrope]
The contact time is the duration of the two RF field matched pulses in a CP cross-polarization experiment. Typically 100 µs to 10 ms. [Allotrope]
The time the process was completed. [Allotrope]
The adjusted retention time is the total retention time less the hold-up volume. [IUPAC]
Timestamp of the collection of data resulting from an analytical technique. [Allotrope]
The acquisition duration is the length of the time interval from the start of a measurement until its end. [Allotrope]
acquisition duration of an ssNMR measurement
Volume is the quantity of three-dimensional space occupied by a physical object. [Allotrope]
This property should be narrowed if the volume applies to a specific part of the device.
The washing volume is the amount of washing solution that is used. [Allotrope]
The total retention volume, V R, is the volume of eluent carrier gas admitted to the column between the injection of the sample and the emergence of the peak maximum of the specified component. It includes the hold-up volume. In gas chromatography, the volume of carrier gas is specified at the outlet pressure and temperature of the column. [IUPAC]
specific retention volume at 0 degree Celsius
The net retention volume per gram of stationary phase (stationary liquid, active solid or solvent-free gel corrected from column temperature to 0 °Celsius. [IUPAC]
The specific retention volume is the net retention volume per gram of stationary liquid, active solid or solvent-free gel. In liquid chromatography, except when conducted at very high pressures, the compression of the mobile phase is negligible, and the adjusted and net retention volumes are identical. The specific retention volume is then the adjusted retention volume per gram of stationary liquid, active solid, or solvent-free gel. [IUPAC]
The pre air gap volume is an amount of air that is aspirated before the measured sample is aspirated. [Allotrope]
The post air gap volume is the amount of air that is aspirated after the aspiration of the measured sample. [Allotrope]
The volume of mobile phase entering the column between the start of the elution and the emergence of the peak maximum. In most of the cases, this is equal to the total retention volume. There are, however, cases when the elution process does not start immediately at sample introduction. For example, in liquid chromatography. [IUPAC]
The net retention volume is the adjusted retention volume multiplied by the pressure-gradient correction factor. [IUPAC]
The sample volume of the injection. [Allotrope]
The volume of the mobile phase required to elute a component the concentration of which in the stationary phase is negligible compared to that in the mobile phase. In other words, this component is not retained at all by the stationary phase. Thus, the hold-up volume is equal to the retention volume of an unretained compound. The hold-up volume includes any volumes contributed by the sample injector, the detector, and connectors. In gas chromatography this term is also called the gas hold-up volume. The corrected gas hold-up volume is the gas hold-up volume multiplied by the compression (compressibility) correction factor. [IUPAC]
The backing solvent volume is the amount of backing solvent that is aspirated before the measured sample is aspirated. [Allotrope]
The adjusted retention volume is the total retention volume less the hold-up volume. [IUPAC]
In science and engineering, the weight of an object is usually taken to be the force on the object due to gravity. [Wikipedia]
Weight of an empty vehicle or container. [Wikipedia]
The stabilized weight is the measured weight after the weighing instrument has stabilized. [Allotrope]
Weight of a weighed object after deduction of the weight of its packaging or of a transport device (tare weight) with which it was weighed. [DOWT]
Smallest sample weight (weighed-in quantity, net weight) required for a weighment to just achieve a specified relative accuracy of weighing. Provided that systematic errors have already been corrected, the minimum sample weight mmin can be determined from the allowed uncertainty U and the repeatability of the weighing sRP mmin = (k/U)*sRP with k the expansion factor. Corresponding requirements are described, for instance, in pharmacopeias, or may be defined in the user's process specifications. [DOWT]
The instant weight is measured directly after the weight is put on the weighing instrument without stabilization. [Allotrope]
Total weight (load) on the platform of a weighing instrument, i.e. the weight of the weighed object (net weight or sample) plus the weight of its container or packaging (tare weight). [DOWT]
The adjusted weight is rounded to a user-specified number of digits. [Allotrope]
Logarithm of the ratio of incident to transmitted radiant power through a sample (excluding the effects on cell walls). Depending on the base of the logarithm a decadic and Napierian absorbance are used. Symbols: A, A_10, A_e. This quantity is sometimes called extinction, although the term extinction, better called attenuance, is reserved for the quantity which takes into account the effects of luminescence and scattering as well. [IUPAC]
The absorption index is a measure of the decrease of energy of electromagnetic radiation that enters a material. [Allotrope]
Ratio of the maximum ion current recorded at a specified m/z value to the maximum ion current arising from the same species recorded at a neighboring m/z value. [IUPAC]
The abundance sensitivity is a measure of the contribution of the peak “tail�? of a major isotope (with a certain m/z value) to an adjacent m/z value which in some cases might more than 1 m/z removed. Its value is dependent on the resolving power of the mass spectrometer. [IUPAC]
The experimentally determined weight present versus the amount of sample weighed. [Allotrope]
The decrease in weight of the sample in the thermogravimetry experiment. [Allotrope]
The increase in weight of the sample in the thermogravimetry experiment. [Allotrope]
The wave number is the number of waves within a unit of length. [Allotrope]
number of waves of light per cm expressed as cm^-1 in Raman spectroscopy
The amount of substance of a given kind that is contained in a sample. [Allotrope]
2015-11-26 change pref label, add alt label [Allotrope]
The solution that is used in the wash. [Allotrope]
The volume mean distribution is a measure of the average distribution of particle volumes in a sample. It is calculated as the sum of fourth power of weighted geometric means divided by the sum of third power of the weighted geometric means. [Allotrope]
Voltage, electric potential difference, electric pressure or electric tension (denoted ?V or ?U) is the difference in electric potential energy between two points per unit electric charge. [Wikipedia]
Viscosity is a measure of a liquid's resistance to deformation under shear force. [IUPAC]
2015-12-10 Changed prefLabel from "viability" to "viable cell density", removed altLabels "viability" and "total viable cells". [Allotrope]
The viable density is the density of living cells per volume of sample. [Allotrope]
The viability is the ratio of viable cells to total cells. [Allotrope]
The van't Hoff enthalpy is the energy change due to a structural transition that is calculated from the area of the differential scanning calorimetry peak for different temperatures divided by the total area of the peak. It is a measure of the occurred amount of structural transition. [Allotrope]
A peak observed at higher field strength than another peak or expected/calculated chemical shift. [Allotrope]
Nascent ion that is either inherently unstable or formed with sufficient energy to dissociate within the region of formation such as the ion source or collision cell. [IUPAC]
The uniformity in particle sizing is a measure of absolute deviation from the median of particle sizes. [Allotrope]
A conditional capability takes its value under specified conditions. [Allotrope]
The repeatability of a balance at 100 g is 0.01 mg. the repeatability is 0.01 mg under the condition that the load weight is 100 g.
Relative retention calculated by using the total retention volumes (times) instead of the adjusted or net retention volumes (times). [IUPAC]
The transition heat capacity is the distance between the extrapolated baselines from the start and the end of a differential scanning calorimetry peak. [Allotrope]
The transition entropy is calculated by integration of a differential scanning calorimetry peak of a plot of Cp/T versus T. [Allotrope]
Property of the result of a measurement or the value of a standard whereby it can be related to stated references, usually national or international standards, through an unbroken chain of comparisons all having stated uncertainties. The concept is often expressed by the adjective traceable. The unbroken chain of comparisons is called a traceability chain. [IUPAC]
Sum of all the separate ion currents carried by the ions of different m/z contributing to a complete mass spectrum or in a specified m/z range of a mass spectrum. [IUPAC]
The total number of cells (dead and alive) in a cell culture sample. [Allotrope]
The quantity is expressed in cells per milliliter. [Allotrope]
The target process state of a process trigger, the state transition switches to. [Allotrope]
The rate that the titrant is introduced into the titration. [Allotrope]
A specific event/situation that is the reference time for the relative time points of the event table. [Allotrope]
The injection time is the usual timebase for chromatography event tables.
Theoretical plates is a concept for the description of column efficiency. The number of theoretical plates (N) is an indirect measure of peak width for a peak at a specific retention time. Columns with high plate numbers are considered to be more efficient (i.e., higher column efficiency) than columns with lower plate numbers. A column with a high number of plates will have a narrower peak at a given retention time than a column with a lower number of plates. N=16(tR/w)² or N=5.54(tR / wH)² where tR is the retention time, w is the width of the peak and wH is half the width of the peak. [Allotrope]
Value of (m/z)/Δ(m/z) measured for two peaks of equal height in a mass spectrum at m/z and m/z ±Δ(m/z) that are separated by a valley which at its lowest point is 10 % of the height of either peak. For peaks of similar height separated by a valley, let the height of the valley at its lowest point be 10 % of the lower peak. Then the resolution (10 % valley definition) is (m/z)/Δ(m/z) and should be given for a number of values of m/z. [IUPAC]
An attribute of resolution when the ratio between adjacent signals is 10% of the signal height. [PSI-MS]
A temperature difference is the quantitative deviation of temperatures of two objects. [Allotrope]
differential temperature of reference and sample heating cell of differential scanning calorimetry
The tablet thickness is the distance between the top and bottom faces of a tablet. [Allotrope]
Volume of fluid aspirated per unit time. [Allotrope]
The surface mean distribution is a measure of the average distribution of particle surfaces in a sample. It is calculated as the sum of third power of weighted geometric means divided by the sum of squared weighted geometric means. [Allotrope]
The surface area is the total area of the surface of an object. [Allotrope]
A supplier is anyone who provides goods or services to a company or individual. [Allotrope]
2016-04-25 remove subclassing under composed of [Allotrope]
2016-04-25 restrict range to chemical entity [Allotrope]
2017-12-11 removed range since chemical entity was deprecated but still need to decide how to model [Allotrope]
A chemical substance the material is composed of. [Allotrope]
The stir speed is the number of stirrings per time unit. [Allotrope]
number of rotations of stir bar per second
The starting mass is the mass at the beginning of a process. [Allotrope]
Ion with internal energy sufficiently low that it does not rearrange or dissociate prior to detection in a mass spectrometer. [IUPAC]
2016-01-25 move under has range [Allotrope]
The spectral width defines the range of detected frequencies. Only those signals that lie within the spectral width are detected. [Allotrope]
Deviation of the peak intensities in a mass spectrum from their expected values that occurs when the relative concentration of the various analytes change during acquisition of the mass spectrum. [IUPAC]
The specific surface area is the ratio of the total area of particles to their total weight. [Allotrope]
The sparging dissolved gas is the percental amount of gas that is dissolved in a solution. [Allotrope]
In mathematics and physics, a space group is the symmetry group of a configuration in space, usually in three dimensions. In crystallography, space groups are also called the crystallographic or Fedorov groups, and represent a description of the symmetry of the crystal. [Wikipedia]
Sorption is a physical and chemical property which describes the ability of one substance to become attached to another. [Allotrope]
The slope is the ratio of the vertical change to the horizontal change between two points on a line. [Wikipedia]
The Signal-to-Noise Ratio variable indicates the quantification accuracy of components. The Signal-to-Noise Ratio is calculated as follows: S/N = 2*(Peak Height/Noise) where Noise = A Signal Noise column or field computes the signal noise in a specific time range of the chromatogram as described in the E1657-98 ASTM standard. [Allotrope]
The shake speed is the speed of the shaking expressed as shakes per unit of time. [Allotrope]
The relative retention value calculated for two adjacent peaks. By definition, the value of the separation factor is always greater than unity. [IUPAC]
A constant assigned to a drug substance describing its ability to segregate from the other components of a powder blend during shear events such as powder flow, impact fluidization, or air entrainment. [Allotrope]
The sedimentation rate for a particle of a given size and shape measures how fast the particle settles, or sediments. It is often used to reflect the rate at which a molecule travels to the bottom of a test tube under the centrifugal force of a centrifuge. [Wikipedia]
A spectrum that is produced by a scan. [Allotrope]
The range of the scan window (lower and upper bound). [PSI-MS]
The scan mode code encodes the used scanning mode. [Allotrope]
upscan in differential scanning calorimetry
The scan axis of the goniometer. [Allotrope]
The scan is the measurement that produces a spectrum or a diffraction pattern. [Allotrope]
The code that describes a mode of sampling. [Allotrope]
The run buffer that is used for the capillary electrophoresis. Type and pH of the run buffer as well as contained additives are used to control the CE process. [Allotrope]
Rotational speed (or speed of revolution) of an object rotating around an axis is the number of turns of the object divided by time, specified as revolutions per minute (rpm), revolutions per second (rev/s), or radians per second (rad/s). Rotational speed is equal to the angular velocity ? (or O) divided by 2p. [Wikipedia]
The roller direction is the direction of the rotation of the rollers. [Allotrope]
A measure of the change in gap between the rollers as compared to the set-point. [Allotrope]
Conventional measure of the degree of unsaturation of an organic molecule given by X – Y/2 + Z/2 + 1 where X is the number of carbon atoms, Y is the number of hydrogen or halogen atoms and Z is the number of nitrogen and phosphorus atoms. [IUPAC]
The Kova�?ts (Retention) Index expresses the number of carbon atoms (multiplied by 100) of a hypothetical normal alkane which would have an adjusted retention volume (time) identical to that of the peak of interest when analyzed under identical conditions. [IUPAC]
The retention index of a sample component is a number, obtained by interpolation (usually logarithmic), relating the adjusted retention volume (time) or the retention factor of the sample component to the adjusted retention volumes (times) of two standards eluted before and after the peak of the sample component. [IUPAC]
A measure of the time the sample component resides in the stationary phase relative to the time it resides in the mobile phase; it expresses how much longer a sample component is retarded by the stationary phase than it would take to travel through the column with the velocity of the mobile phase. Mathematically, it is the ratio of the adjusted retention volume (time) and the hold-up volume (time): k = V'_R / V_ M = t'_R / t_ M If the distribution constant is independent of sample component concentration, then the retention factor is also equal to the ratio of the amounts of a sample component in the stationary and mobile phases respectively, at equilibrium: k = [amount of component in stationary phase] / [amount of component in mobile phase]. If the fraction of the sample component in the mobile phase is R, then the fraction in the stationary phase is 1 - R; thus k = (1 - R) / R. [IUPAC]
The fraction of the sample component in the mobile phase at equilibrium. [IUPAC]
In a mass spectrum, the observed m/z value divided by the smallest difference ?(m/z) for two ions that can be separated: (m/z)/?(m/z). [IUPAC]
By analogy with the peak width definition for mass resolution, a peak showing the number of ions as a function of their translational energy should be used to give a value for the energy resolution. [IUPAC]
The smallest interval measurable by a scientific instrument. [Allotrope]
The detector resolution that is the resolving power of a detector to detect the smallest difference between two ions so that the valley between them is a specified fraction of the peak height. [PSI-MS]
The residual is the fraction of other components such as air that is included in a sample of particles. For well fitted systems the residual should be very small. [Allotrope]
The repetition frequency is the number of repetitions of the process per time unit. [Allotrope]
The degree of agreement between the results of successive measurements of one and the same measurement variable, conducted under identical measurement conditions. Note: The conditions are referred to as repeatability conditions ([VIM:2008] 2.20). Repeatability conditions are: - the same measurement procedure - the same observer - the same measuring instrument - the same place - a short time between measurements. The repeatability can be expressed quantitatively as the scatter values of the results. [DOWT]
The relative refractive index is the ratio of the velocity of a particle in a vacuum to the velocity of that same particle through a medium, relative to the refractive index of that medium. [Allotrope]
The device that is the target of the controller. [Allotrope]
The temperature of a sample compartment or the column compartment of an HPLC system is regulated by a temperature controller.
The relative peak area of a peak is the percental fraction of the peak area with respect to the total area of the spectrum. [Allotrope]
Measure of an isotope ratio in a sample of interest relative to a reference defined by the relation δ = (Rsample – Rstandard)/Rstandard where R is the isotope ratio of the element. [IUPAC]
Relative isotope ratio differences are usually small and are therefore often expressed in units of parts per mil with symbol ‰. [IUPAC]
The reference is often an international measurement standard.[IUPAC]
The same relative differences are used to calculate delta values from the abundance of isotopomers and isotopologs, ion currents, frequencies, or optical extinctions. [IUPAC]
Units of parts per thousand (ppt, 10–3) or parts per million (ppm, 10–6) are deprecated. [IUPAC]
Smallest amount of material detectable in a matrix relative to the amount of material analyzed, given in atomic, mole, or weight fractions. [IUPAC]
Often incorrectly referred to as sensitivity. [IUPAC]
The meaning of “detectable�? must be specified, for example, three times the standard deviation of the measurement (3σ criterion). [IUPAC]
The relative amount of oxygen. [Allotrope]
The refractive index of a material is a dimensionless number that describes how light, or any other radiation, propagates through the material. The refractive index determines how much light is bent or refracted. [Wikipedia]
The reference range is a user specified range of expected measurement values. Measured values that are located within the range are considered valid measurement values. [Allotrope]
A diffraction pattern of a reference sample. [Allotrope]
e.g. reference patterns of diffractograms
The time delay between the initial running of a measurement cycle and the subsequent rerunning of an identical cycle. [Allotrope]
Recovery is the ratio of recovered solute from a solution containing an additional test solute, over the recovered solute value from a simple solute and solvent solution. It has no unit and if the resulting ratio is equal to one, the test solute had no decernable effect on the recovery of the recovered solute. [Allotrope]
The recompressibility provides a measure of the remaining powder compressibility after the roller compaction process. This can have an impact on tableting as a low recompressibility can result in weaker tablets. [Allotrope]
Energy released when an electron is added to an ionized molecule or atom. [IUPAC]
Ion that results from molecular rearrangement, in which its atoms or groups of atoms have transferred from one portion of the molecule to another during or following ionization. [IUPAC]
Ion that reacts with a neutral to produce an ionized form of such species through an ion/molecule reaction, for example, as in chemical ionization. [IUPAC]
Gas that reacts with ions to produce product ions through ion/molecule reactions; for example, a gas such as methane, ammonia, or isobutane used in chemical ionization to create reagent ions or a gas used in ion traps or collision cells to perform gas-phase ion/molecule reactions. [IUPAC]
Limiting droplet size at which self-fragmentation will occur for charged droplets generated in electrospray or other ionization processes. Self-fragmentation occurs when the electrostatic repulsion force generated by the excess charge exceeds the surface tension that maintains the integrity of the droplet. [IUPAC]
The quantitative relation between two amounts of objects showing the number of times one is contained within the other. [Allotrope]
The physical quantity with associated unit which describes the scope or minimum boundary size needed to fully encompass a set of data. [Allotrope]
R-squared is a statistical measure that quantifies the closeness of data to a fitted regression. [Allotrope]
R squared of an UV/VIS quick slope experiment
The quantification of a chemical entity using unit and numeric value. [Allotrope]
The quantifying numerical value with associated unit of measure which denotes the total amount of a biological entity currently in question. [Allotrope]
2016-04-25 move under sample [Allotrope]
A quality control sample is a type of sample that is used for the calibration of a device for quality control. [Allotrope]
The purity of the test material taking into account the organic impurities,residual solvents, heavy metals, and water. [Allotrope]
A purge gas is a gas flowing through the instrument. [Allotrope]
The pulse power is a measure of the strength of a pulse. [Allotrope]
For a species M, the negative of the enthalpy change for the gas phase reaction M + H+ ? [M + H]+ at a specified temperature, usually 298 K. [IUPAC]
The projected area is the two-dimensional area of a three-dimensional object projected on to an arbitrary plane. [Wikipedia]
Ion formed as the product of a reaction involving a particular precursor ion. [IUPAC]
Reference to a product that is associated with the material. [Allotrope]
Most abundant ion of an isotope cluster. [IUPAC]
11B79Br2 81Br+• ion of m/z 250 of the cluster of isotopolog molecular ions of BBr3.
Principal ion has also been used to describe ions that have been artificially isotopically enriched in one or more positions such as 13CH3+• or CH2D2 +, but those are best defined as isotopolog ions. [IUPAC]
The tendency of material to align in a particular direction in the sample holder. [Allotrope]
The preferred orientation may alter the intensity of diffraction peaks in X-ray powder diffraction. [Allotrope]
A measure of how easily the powder blend material will transfer under gravity and shear events. [Allotrope]
The powder compressibility represents the ratio of solid fraction of the compacted material under a given compaction pressure. [Allotrope]
The ratio of mechanical strength to the solid fraction of the given material. [Allotrope]
The pH meter calibration offset is the temperature-dependent offset of the pH value resulting from the calibration. [Allotrope]
The mode of calibration used during the process of calibrating a pH meter. [Allotrope]
segmented calibration mode for straight connection of the calibration points, linear calibration mode using linear regression
The percental viable cell spot brightness is a numerical measure of the brightness of the cell spot of a viable cell and is used to determine whether or not a cell is viable or non-viable. [Allotrope]
The percental viable cell spot area is the fraction of the total area of the cell that is occipied by the cell spot. [Allotrope]
The percental center threshold is the threshold of brightness of the center of a cell on a percental scale. [Allotrope]
The cell brightness is a measure of the brightness of a cell boundary within an image. [Allotrope]
The percentage gated is the fraction of events that is selected by a given gate compared to the total number of events. [Allotrope]
Collision energy required to fragment an ion represented as a percent value. [PSI-MS]
For a single peak corresponding to singly charged ions at mass m in a mass spectrum, the resolution may be expressed as (m/z)/?(m/z), where ?(m/z) is the width of the peak at a height which is a specified fraction of the maximum peak height. It is recommended that one of three values 50, 5, or 0.5 % should always be used. [IUPAC]
For an isolated symmetrical peak recorded with a system which is linear in the range between 5 % and 10 % levels of the peak, the 5 % peak width definition is equivalent to the 10 % valley definition. A common standard is the definition of resolution based upon ?m being full width of the peak at half its maximum (FWHM) height. [IUPAC]
The peak width is the width of a peak determined at the baseline level. The peak tangents are drawn from the turning points of the leading and trailing edges. Then the points of intersection with the baseline are calculated. The distance between the two points of intersection is the baseline level width. [Allotrope]
The peak stop is the last value of the abscissa that belongs to the peak. [Allotrope]
The peak start is the first value of the abscissa that belongs to the peak. [Allotrope]
The slope or gradient of a line is a number that describes both the direction and the steepness of the line or the peak. [Wikipedia]
Ordinal specifying the rank in intensity of a peak in a spectrum. Base peak is 1. The next most intense peak is 2, etc. [Allotrope]
The peak position corrected is the resulting peak position after application of a correction. [Allotrope]
The position of the peak in the spectrum. [Allotrope]
The peak onset is the crossing of the peak baseline with the tangent to the peak of maximum slope. [Allotrope]
The peak maximum is the value of the abscissa at the extremum of the peak. [Allotrope]
A list of scan numbers and or scan ranges associated with a peak list. [Allotrope]
A list of raw scans and or scan ranges used to generate a peak list. [Allotrope]
The distance between the peak maximum and the peak base, measured in a direction parallel to the axis representing the detector response resp. the measured quantity. [IUPAC]
The peak height is a relative quantity measured with reference to the selected peak base. If the peak base is the abscissa then the peak height is equal to its maximum value.
The peak asymmetry is the deviation of a peak from a symmetric curvature. [Allotrope]
The corrected peak area is the resulting peak area after application of a correction. [Allotrope]
The area enclosed between the peak and the baseline. [IUPAC]
The pathlength step is the constant increment of the pathlength between different observations of a quick slope measurement. [Allotrope]
The pathlength range is the interval of pathlengths covered during a quick slope measurement. [Allotrope]
The particle sizing result span is a measure of the width of the particle distribution. It is defined as the difference of d90 and d10 divided by d50. [Allotrope]
The particle sizing result mode is the highest peak of the frequency distribution. It represents the predominant particle size in the sample. [Allotrope]
IUPAC Compendium on Analytical Nomenclature (The Orange Book), Web Edition, IUPAC, 2002
The particle size is a measure of the size of particles in a sample: The average diameter of the solid particles. [IUPAC]
A particle distribution is the trend of the fractions of particles that have a property of interest within a certain interval of values divided by the width of the interval. [Allotrope]
Part of the system that is undergoing a washing process. [Allotrope]
The packaging describes how the material is kept in store. [Allotrope]
Sigma-Aldrich catalog: Dosipack (plastic bottle with built-in calibration compartment)
Quotient of the negative natural logarithm of the rational activity of water and the molar mass of water. [IUPAC]
Obscuration is a percentage of light diverted or otherwise modified by the processes of scattering, absorption, or diffraction. [Allotrope]
obscuration of a laser corresponding to an optical concentration range of 8 to 12% during a process of particle sizing
The normalized transition heat capacity is the distance between the extrapolated baselines from the start and the end of a differential scanning calorimetry peak normalized by the sample mass. [Allotrope]
The normalized heat flow is the energy change of the sample measured as a function of temperature or time and normalized by the sample mass. [Allotrope]
The normalized heat capacity is equal to the change of heat of an object in relation to a change of temperature normalized by the mass of the object. It is determined from a differential scanning calorimetry measurement by subtraction of the baseline from the heat flow curve. [Allotrope]
CDCl3, D2O, acetone-d6, acetic acid-d4, benzene-d6, DMF-d7, tetrahydrofuran-d8 [Allotrope]
When the pH equals to 7, this is described as the neutral point of the titration. [Allotrope]
Of a specified isotope of an element, the isotopic abundance in the element as found in nature, either an average value on planet Earth or from a specified location. [IUPAC]
The minimum circularity for which a particle is counted as a cell. [Allotrope]
The migration index is the migration time of a compound that was measured under standard conditions. It can be used to identify unknown substances by comparison with a compendium of migration indices. [Allotrope]
The type of medium used to grow a specific cell culture. [Allotrope]
The median fluorescent intensity is the median of the fluorescence of a collection. [Allotrope]
There are a variety of methods for calculating measurement uncertainty. In the pharmaceutical industry the reference content is often determined according to the U.S. Pharmacopeia. Otherwise, measurement uncertainty is often determined based on ISO 3) 17025. The latter corresponds to the GUM method.[Mettler]
A parameter, associated with the result of a measurement, that characterizes the dispersion of the values that could reasonably attributed to the measurement variable. [VIM]
The method that was applied in order to get the result. [Allotrope]
The device that was used for the measurement. [Allotrope]
Quantity value representing a measurement result. [VIM]
For a measurement involving replicate indications, each indication can be used to provide a corresponding measured quantity value. This set of individual measured quantity values can be used to calculate a resulting measured quantity value, such as an average or median, usually with a decreased associated measurement uncertainty. [VIM]
In the case where the range of the true quantity values believed to represent the measurand is not small compared with the measurement uncertainty, a measured quantity value is often an estimate of an average or median of the set of true quantity values. [VIM]
When the range of the true quantity values believed to represent the measurand is small compared with the measurement uncertainty, a measured quantity value can be considered to be an estimate of an essentially unique true quantity value and is often an average or median of individual measured quantity values obtained through replicate measurements. [VIM]
The sample that is measured. [Allotrope]
The length of a steel rod in equilibrium with the ambient Celsius temperature of 23 °C will be different from the length at the specified temperature of 20 °C, which is the measurand. In this case, a correction is necessary. [VIM]
The potential difference between the terminals of a battery may decrease when using a voltmeter with a significant internal conductance to perform the measurement. The open-circuit potential difference can be calculated from the internal resistances of the battery and the voltmeter. [VIM]
In the second edition of the VIM and in IEC 60050-300:2001, the measurand is defined as the "particular quantity subject to measurement". [VIM]
The measurement, including the measuring system and the conditions under which the measurement is carried out, might change the phenomenon, body, or substance such that the quantity being measured may differ from the measurand as defined. In this case, adequate correction is necessary. [VIM]
The specification of a measurand requires knowledge of the kind of quantity, description of the state of the phenomenon, body, or substance carrying the quantity, including any relevant component, and the chemical entities involved. [VIM]
The person who executed the measurement. [Allotrope]
The mean fluorescent intensity is the average fluorescence of a collection. [Allotrope]
The maximum value of fraction is the highest value of a numerically quantified property that corresponds to the given fraction of a larger sample. [Allotrope]
All particles of a fraction of 16% of the total sample have a particle size below 5 nm, so the maximum value of a fraction of 16% is 5 nm.
The manufacturer of the material. [Allotrope]
Solvent that is mixed with the sample flow in a liquid introduction mass spectrometry interface in order to adjust the flow rate or solvent characteristics of the system, for example, to promote ionization efficiency. [IUPAC]
Nuclei having the same resonance frequency in nuclear magnetic resonance spectroscopy and also identical spin-spin interactions with the nuclei of a neighbouring group are magnetically equivalent. The spin-spin interaction between magnetically equivalent nuclei does not appear, and thus has no effect on the multiplicity of the respective NMR signals. Magnetically equivalent nuclei are necessarily also chemically equivalent, but the reverse is not necessarily true. [IUPAC]
The rotation rate of a MAS rotor usually given in kHz. [Allotrope]
The abbreviation m/z is used to denote the dimensionless quantity formed by dividing the mass number of an ion by its charge number. It has long been called the mass-to-charge ratio although m is not the ionic mass nor is z a multiple or the elementary (electronic) charge, e. The abbreviation m/e is, therefore, not recommended. [IUPAC]
An ion of 100 atomic mass units (m = 100) carrying two charges (z = 2) will be observed at m/z = 50.
For example, for the ion (C7H72+) , m/z equals 45.5. [IUPAC]
Mass-to-charge ratio is deprecated. Mass-to-charge ratio has been used occasionally for the horizontal axis in a plot of a mass spectrum, although the quantity measured is not the ion’s mass divided by its electric charge (SI units kg C–1). However, m/z is recommended as an abbreviation to represent the dimensionless quantity that is used almost universally as the independent variable in a mass spectrum. [IUPAC]
The abbreviation is written in italicized lowercase letters with no spaces. [IUPAC]
The logarithmic acid dissociation constant is a measure of the tendency of a compound or medium to act as a hydrogen donor. [IUPAC]
Linearity is a property of a data set which describes its ability to be graphically described by a straight line. [Allotrope]
The linear velocity is the rate of change in position per time unit. [Allotrope]
PAC, 1990, 62, 2167 (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2199
The redirection of a light beam due to interactions with molecules (Rayleigh and Raman scattering) and aerosols (Mie scattering). Scattered light received at any point in the atmosphere (sometimes called sky radiation) is a very important component of the total radiation received from the sun; it is dependent on the solar zenith angle, elevation aerosol concentration etc. [IUPAC]
Laser obscuration is the percentage or fraction of incident light that is attenuated due to extinction (scattering and/or absorption) by the particles. [ISO 13320-1:1999]
The experimentally determined amount of active relative the theoretical amount present in the drug product, normally expressed in percent. [Allotrope]
Excess energy above the thermochemical threshold required to observe dissociation of a precursor ion within the timeframe of a particular mass spectrometry experiment. [IUPAC]
Kinetic shifts are important when thermochemical quantities are deduced from appearance energy measurements. [IUPAC]
Isomeric ions having the same numbers of each isotopic atom but differing in their positions within the ion. [IUPAC]
Ions that differ only in the isotopic composition of one or more of the constituent atoms. [IUPAC]
CH4+• and CH3D+• or 10BF3+• and 11BF3+•, or the ions forming an isotope cluster corresponding to the natural isotopic abundances of the constituent atoms.
Isotopolog is an abbreviation of isotopic homolog. [IUPAC]
Ratio of the number of atoms of one isotope to the number of atoms of another isotope of the same chemical element in the same system. [IUPAC]
Usually the minor, less abundant isotope to the major, most abundant isotope, for example, 13C/12C. [IUPAC]
The isotope distribution is the distribution of peaks caused by the presence of different isotopes within a molecule. [Allotrope]
The ion(s) selected from the parent scan for generating an MSn scan. [Allotrope]
The isoelectric point is the pH at which a compound is neutral. [Allotrope]
A core relation that holds between a part and its whole. [RO]
Minimum energy required to remove an electron from a neutral atom or molecule in its ground state. [IUPAC]
Adiabatic ionization energy refers to the formation of the molecular ion in its ground vibrational state and vertical ionization energy applies to the transition to the molecular ion without change in geometry. [IUPAC]
Second ionization energy is the energy required to remove the second electron from the singly charged ion. [IUPAC]
This quantity was formerly called ionization potential. [IUPAC]
The duration of intervals between scanning, during which the instrument configuration is switched. [PSI-MS]
An inter scan relaxation delay is a time period which ensures that the spins are detectable. [Allotrope]
Ratio of intensity of a resolved peak to the intensity of the resolved peak that has the greatest intensity (base peak). This ratio is generally measured as the normalized ratio of the heights of the respective peaks in the mass spectrum, with the height of the base peak taken as 100. [IUPAC]
Intensity is a measure of detector response and should not be used to describe the abundance of ions. [IUPAC]
Relative abundance of a variable, normally dimensionless. [Allotrope]
Continuous or incremental change over time in indication, due to changes in metrological properties of a measuring instrument. [VIM]
The injection speed is the dispensed volume per unit of time. [Allotrope]
The location of the injection. [Allotrope]
The incident beam path radius is the distance from the x-ray tube to the center of the goniometer. [Allotrope]
In-plane diffraction is a type of diffraction where the incident and the diffracted beams are parallel to the surface of the sample. [Allotrope]
The image size is the size of the image expressed as the area of pixels. [Allotrope]
An image that is related to the entity. [Wikipedia]
recorded image of cell counting, related to the cell counter measurement result [Allotrope]
Hysteresis is the time-based dependence of a system's output on present and past inputs. The dependence arises because the history affects the value of an internal state. To predict its future outputs, either its internal state or its history must be known. [Wikipedia]
The difference between sorption and desorption. [Allotrope]
The heat flow is the energy change of the sample measured as a function of temperature or time. [Allotrope]
The heat capacity is equal to the change of heat of an object in relation to a change of temperature. It is determined from a differential scanning calorimetry measurement by subtraction of the baseline from the heat flow curve. [Allotrope]
A repeated small cut from the primary GC analytical column is eluted against a second GC column, GCxGC chromatography. [Allotrope]
The viability marker of living cells that is related to an entity. [Allotrope]
Tablet appearance is a tablet coating result that describes the resulting appearance of the coated tablets. [Allotrope]
The subject of a condition or event. [Allotrope]
A solvent that the solution contains. [Allotrope]
A solute that is contained within a solution. [Allotrope]
The sequence file that is related to an entity. [Allotrope]
The raw data file that is related to an entity. [Allotrope]
J. Adams. J. Am. Soc. Mass Spectrom. 3, 473 (1992).
M. Bursey. Mass Spectrom. Rev. 10, 1 (1991).
P. Price. J. Am. Soc. Mass Spectrom. 2, 336 (1991).
Ion that is the precursor ion of the nth-generation product ion. [Allotrope]
The particle model that is related to an entity. [Allotrope]
A core relation that holds between a whole and its part. [RO]
The object (value) of a property. [Allotrope]
needs revisting, usage pattern is both reification and others
The method file that is related to an entity. [Allotrope]
An initial condition that must be fulfilled at the beginning of the chain of events. [Allotrope]
The formulation is the composition of ingredients that is related to an entity. [Allotrope]
Relation that points to the context of the event. [Allotrope]
Reference to a material that acts as a diluting agent. [Allotrope]
The structure of some data object. [Allotrope]
The culture medium that is used for a cell culture. [Allotrope]
The calibration point is the value used for calibration. A calibration can have many calibration points. [Allotrope]
The binary data of a result. [Allotrope]
The apoptotsis marker for dead cells that is related to the entity. [Allotrope]
The acceptable quality level is a specification of a quality that is required for acceptance. [Allotrope]
The hardness of a material is a measure of how resistant it is to various kinds of permanent shape change when a compressive force is applied. [Wikipedia]
The granulator speed is the number of revolutions of the granulator per units of time. [Allotrope]
granulator speed expressed as revolutions per minute (rpm)
The Gibbs free energy is a thermodynamic potential that measures the "usefulness" or process-initiating work obtainable from a thermodynamic system. It is the chemical potential that is minimized when a system reaches equilibrium at constant pressure and temperature. [Wikipedia]
The source process state of a process trigger, the state transition switches from. [Allotrope]
Identifies the sample fraction. [Allotrope]
In physics, a force is any interaction that, when unopposed, will change the motion of an object. In other words, a force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate. Force can also be described by intuitive concepts such as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of Newtons and represented by the symbol F. [Wikipedia]
Relation to a standard that the entity follows or is compliant to. [Allotrope]
Amount of flowing agent per time unit. [Allotrope]
Describes the amount of material that moves through a space over a set period of time. [Allotrope]
Stability region of a Mathieu stability diagram closest to the origin. [IUPAC]
The moiety that is associated with the removal of peaks in the spectrum. [Allotrope]
The feed auger torque is the torque exerted on the powder by the feed auger. [Allotrope]
Relation to a plan or description that is executed by the process. [Allotrope]
The process is executed by an operator. [Allotrope]
Time when an event occurs, can be single point or a range in time. [Allotrope]
The amount of time the event takes. [Allotrope]
The equivalence point on pH titration curve is where all of the starting solution (usually an acid) has been neutralized by the titrant (usually a base). [Allotrope]
The equilibrium constant of a chemical reaction is the value of the reaction quotient when the reaction has reached equilibrium. An equilibrium constant value is independent of the analytical concentrations of the reactant and product species in a mixture, but depends on temperature and on ionic strength. Known equilibrium constant values can be used to determine the composition of a system at equilibrium. [Wikipedia]
The chemical element of the nucleus or isotope. [Allotrope]
The electrophoretic mobility is the electrophoretic velocity divided by the applied electric field. [Allotrope]
Translational energy that electrons acquire when accelerated in an electric field. [IUPAC]
Minimum energy required for a species M to be formed in the process M–• → M + e– where M–• and M are in their ground rotational, vibrational, and electronic states and the electron has zero translational energy. [IUPAC]
Electromagnetic radiation is a form of radiant energy released by electromagnetic processes. [Wikipedia]
The effective mobility of a compound is its mobility expressed relatively to the mobility of a neutral reference compound. [Allotrope]
A peak observed at lower field strength than another peak or expected/calculated chemical shift. [Allotrope]
The distribution shape is a description of the shape of a distribution based on distribution shape codes. [Allotrope]
In a dilution, the dilution factor is equal to the final volume divided by the initial volume of solution. [Allotrope]
The differential power is the measured difference of energy change between the reference and sample heating cell. [Allotrope]
Differential power of reference and sample cell in differential scanning calorimetry. Possible units are for example MilliCalories/min, MicroCalories/second, MicroWatts. If the reference cell is hotter than the sample cell then the DP is positive, otherwise negative (or zero in equilibrium).
The dielectric constant is the relative permittivity of a dielectric material. [Allotrope]
The detection threshold is the borderline between signal and noise. A value of zero means that all signals are detected. [Allotrope]
Rate in data values that are captured in time. [Allotrope]
The detection bandwidth is the relatively small range of wavelengths being treated as a valid detection when a singular wavelength is chosen to be detected by some spectrometry device. [Allotrope]
Desorption is a phenomenon whereby a substance is released from or through a surface. The process is the opposite of sorption (that is, either adsorption or absorption). This occurs in a system being in the state of sorption equilibrium between bulk phase (fluid, i.e. gas or liquid solution) and an adsorbing surface (solid or boundary separating two fluids). When the concentration (or pressure) of substance in the bulk phase is lowered, some of the sorbed substance changes to the bulk state. [Wikipedia]
Being determined, based or contingent on something. [Allotrope]
Measure of an isotope ratio in a sample of interest relative to a reference defined by the relation δ = (R_sample – R_standard)/R_standard where R is the isotope ratio of the element. [IUPAC]
The reference is often an international measurement standard. [IUPAC]
Volume based calculation of the concentration of dead cells in a sample. [Allotrope]
A quantitative measure for nuclear spin-spin, nuclear-electron (hyperfine coupling) and electron-electron (fine coupling in EPR) coupling in magnetic resonance spectroscopy. The 'indirect' or scalar NMR coupling constants are in a first approximation independent of the external magnetic field and are expressed in Hz. [IUPAC]
A correction changes a result in order to take into account further contributions. [Allotrope]
In communications or computer systems, a configuration is an arrangement of functional units according to their nature, number, and chief characteristics. Often, configuration pertains to the choice of hardware, software, firmware, and documentation. The configuration affects system function and performance. [Wikipedia]
Green Book, 2nd ed., p. 15 PAC, 1996, 68, 957 (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 967
Reciprocal of resistivity. This quantity is a tensor in an anisotropic medium. It was formerly called specific conductance. [IUPAC]
Parameters string passed to a command-line interface software application, omitting the executable name. [Allotrope]
colour
The color of something in the visual spectrum. [Allotrope]
Inert gas used for collisional excitation or a reactive gas used for ion/molecule reactions. [IUPAC]
The gas introduced into the collision cell. Ususally nitrogen, can be Argon. [Allotrope]
Energy for an ion experiencing collision with a stationary gas particle resulting in dissociation of the ion. [PSI-MS]
The coefficient of variation is a measure of the width of a distribution. It is defined as the ratio of standard deviation divided by mean. [Allotrope]
An NMR peak that is chemically exchangeable in an NMR experiment, typically NH and OH, and via. the introduction of an additive such as D2O or DCl. [Allotrope]
PAC, 2001, 73, 1795 (NMR nomenclature. Nuclear spin properties and conventions for chemical shifts (IUPAC Recommendations 2001)) on page 1807
The fractional variation of the resonance frequency of a nucleus in nuclear magnetic resonance (NMR) spectroscopy in consequence of its magnetic environment. The chemical shift of a nucleus, d, is expressed as a ratio involving its frequency, ?_cpd, relative to that of a standard, ?_ref, and defined as: d = (?_cpd - ?_ref) / ?_ref. d-values are normally expressed in ppm. [IUPAC]
Cell sharpness is a numerical measure of the clarity of an image. The value affects the distinction between cell (dark) to light (background). [Allotrope]
The carrier frequency is the frequency of an excitation pulse that is meant to excite a nucleus in an NMR experiment. It is called carrier frequency because it carries the excitation to the nucleus. [Allotrope]
The cell counter method is the inspection type that defines the setting that the instrument uses to count the cells in a culture sample. [Allotrope]
The outlet container of rinsing. [Allotrope]
The inlet container of rinsing. [Allotrope]
The resolution of CE describes its capability to separate different compounds. The resolution is maximized if electrophoretic and electroosmotic mobilities have opposite signs but are of similar magnitude. [Allotrope]
The migration velocity is the speed at which a solute travels from the inlet of the capillary to the detection region, calculated by multiplying the electrophoretic mobility by the applied electromagnetic field. [Allotrope]
capillary electrophoresis migration velocity
The capillary electrophoresis electric field is the result calculated from dividing the applied voltage by the total capillary length in an electrophoresis process. [Allotrope]
capillary electrophoresis electric field
The capillary electrophoresis efficiency is determined by the number of theoretical plates, this is defined as the quotient of the value of the capillary effective length squared and the variance. [Allotrope]
The calorimetric enthalpy change is calculated from the area of the differential scanning calorimetry peak. It is equal to the total energy change of the sample. [Allotrope]
A calibrator is a person who executes a calibration. [Allotrope]
The slope of a pH calibration is the temperature-dependent slope of the pH value. Theoretically the slope of a pH electrode is 59.16 mV per pH unit at 25 °C (based on the equation of Nernst). The real slope is determined during calibration. If the slope is below a certain value then the electrode must no longer be used for measurements. [Allotrope]
Result of the action of calibrating an instrument. [DOWT]
The buffer solution that was used for calibration at a special pH value. [Allotrope]
The relation between an instrument or process to a calibration curve. [Allotrope]
The device (class) that is calibrated. [Allotrope]
The binding rate is the rate at which a sample binds to a biosensor device. [Allotrope]
An attribute of resolution when recording the detector response in absence of the analyte. [PSI-MS]
The peak in a mass spectrum that has the greatest intensity. This term may be applied to the spectra of pure substances or mixtures. [IUPAC]
The spectrum combination that has been applied to produce this spectrum if any. If spectra are not combined, it is set to af-p:AFP_0001609. [Allotrope]
The space between two intersecting lines. [Allotrope]
Offset between two analyzers in a constant neutral loss or neutral gain scan. The value corresponds to the neutral loss or neutral gain value. [PSI-MS]
The analysis model is the model that is applied for data processing purposes. [Allotrope]
A general purpose analysis model for the analysis of data of particle sizing.
2016-03-21 move under ratio, change pref label to match defintion [Allotrope]
The ratio of amount dissolved at each time point. [Allotrope]
An ambient condition is a quality of the surrounding space of a process such as temperature or air pressure. [Allotrope]
Result of the action of adjusting an instrument. [DOWT]
The activation energy is the energetical barrier that must be overcome in order to cause a chemical reaction. [Allotrope]
Closeness of agreement between a measured quantity value and a true quantity value of a measurand. [VIM]
The concept ‘measurement accuracy’ is not a quantity and is not given a numerical quantity value. A measurement is said to be more accurate when it offers a smaller measurement error. [VIM]
The term "measurement accuracy" should not be used for measurement trueness and the term “measurement precision�? should not be used for ‘measurement accuracy’, which, however, is related to both these concepts. [VIM]
‘Measurement accuracy’ is sometimes understood as closeness of agreement between measured quantity values that are being attributed to the measurand. [VIM]
The humidity of the surrounding atmosphere. [Allotrope]
The pressure of the surrounding atmosphere. [Allotrope]
The temperature of the surrounding atmosphere. [Allotrope]
The angle at the end of the process. [Allotrope]
The granulator angle is the angle of rotation of the granulator when operating in oscillating mode. [Allotrope]
The pulse angle is the angle through which the nuclear spins are rotated by a particular pulse. [Allotrope]
90° pulse, 180° pulse, a 90° pulse rotates the spins by 90°.
The angle at the beginning of the process. [Allotrope]
The concentration of carbon dioxide (the product of the combustion of carbon with an excess of oxygen) in the blood. [CMO]
The amount of bicarbonate present in a sample of blood. Taken in MilliNormals, or the amount of Milliequivalents of bicarbonate present per Liter. [Allotrope]
The cell culture gas analysis correction is the actual sample temperature values entered during sample analysis which allows the BGA to provide temperature corrected results. Standard BGA analysis is based on a temperature of 37°C. [Allotrope]
The height of the baseline at the end of the peak. [Allotrope]
The height of the baseline at the start of the peak. [Allotrope]
The the classification label of a singular cell, or population of identically classified cells in a cell culture. [Allotrope]
The concentration of a component expressed as mass per volume. [Allotrope]
The volume concentration is the fraction of volume that is occupied by a compound in a mixture with respect to the total volume of the mixture. [Allotrope]
The air buoyancy correction corrects a weight for the fact that "A body experiences a loss in weight equal to the weight of the medium it displaces" (Archimedes’ principle). [Allotrope]
A baseline correction takes into account noise from solvent/sample holders, etc. [Allotrope]
The conductivity temperature correction is a correction for the measurement of conductivity that accounts for the dependency of temperature. [Allotrope]
linear conductivity temperature correction, non-linear conductivity temperature correction (e.g. for water), USP (United States Pharmacopeia) without any conductivity temperature correction
The corrected gas hold-up time is the gas hold-up time multiplied by the compression (compressibility) correction factor. [IUPAC]
The corrected gas hold-up volume is the gas hold-up volume multiplied by the compression (compressibility) correction factor . [IUPAC]
The corrected retention time given by T=j.TR where j is the pressure gradient correction factor for a homogeneously filled column of constant diameter and TR is the retention time. [IUPAC]
The corrected retention volume given by V=j.VR where j is the pressure gradient correction factor for a homogeneously filled column of constant diameter and VR is the retention volume. [IUPAC]
The pH temperature correction is a correction for the measurement of pH that accounts for the dependency of temperature. [Allotrope]
automatic temperature correction (ATC) or manual temperature correction (MTC)
The actual dry flow is the current flow rate of the dry air that is added in order to produce a mixture of gas with defined partial pressures. [Allotrope]
The actual wet flow is the current flow rate of air that contains a solvent and is added in order to produce a mixture of gas with defined partial pressures. [Allotrope]
The gas flow rate is the amount of gas flowing per time unit. [Allotrope]
The target dry flow is the set flow rate of dry air. [Allotrope]
The target wet flow is the set flow rate of wet air containing the solvent for creation of a defined partial pressure. [Allotrope]
The compression force is a measure of the resistance force a substance gives in opposition to a force applied to it. [Allotrope]
The roller compaction force is the compaction force exerted on the powder. [Allotrope]
A solvent added to the original solvent to enhance the solvent power. [Allotrope]
Link to an ordered list of commands to be executed. [Allotrope]
An entry in a protocol of events. [Allotrope]
A material input to the process. [Allotrope]
Information object (data) that is a result (output) of the process. [Allotrope]
A sample that is material output of the process. [Allotrope]
The detection method used as part of the process. [Allotrope]
UV detection as part of a chromatography.
The ionization method used for the mass spectrometry method. [Allotrope]
The measurement method applied as part an experimental process, for example mass spectrometry as part of chromatography. [Allotrope]
The interval of possible values that are bounded by the range. [Allotrope]
The measured chemical entity as defined in ChEBI https://www.ebi.ac.uk/chebi/. [Allotrope]
A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs. [Wikipedia]
Stages of ms achieved in a multi stage mass spectrometry experiment. [Allotrope]
The density distribution is the fraction of particles that have a size within a certain size interval divided by the width of the interval. [Allotrope]
The number distribution is the distribution of the number of particles that belong to a certain range of particle sizes. [Allotrope]
The surface area distribution is the distribution of the surface area of particles in a sample. [Allotrope]
The volume distribution is the distribution of the volume of particles in a sample. [Allotrope]
The mass median diameter is the maximum size of fifty percent of the particles in the particle distribution of the total particles of a sample. Fifty percent of the particles have a particle size below d50. [Allotrope]
The particle size dn is the maximum size of the fraction n of total particles of a particle size distribution. [Allotrope]
The particle size d99 is the maximum size of a fraction of ninety nine percent of the total particles of a particle size distribution. Ninety nine percent of the particles have a particle size below d99. [Allotrope]
The particle size d90 is the maximum size of a fraction of ninety percent of the total particles of a particle size distribution. Ninety percent of the particles have a particle size below d90. [Allotrope]
The particle size d10 is the maximum size of a fraction of ten percent of the total particles of a particle size distribution. Ten percent of the particles have a particle size below d10. [Allotrope]
The peak asymmetry 10 percent is the deviation of a peak from a symmetric curvature measured at 10 percent of the peak height. [Allotrope]
The peak temperature is the local or absolute maximum of a graph where temperature is the dependant variable. [Allotrope]
Peak width obtained at 10% height of the peak. For calculating the peak widths at 10% height over the baseline, a line parallel to the baseline is drawn at the selected height. The point of intersection with the signal curve is the peak width. [Allotrope]
Peak width obtained at 5% height of the peak. For calculating the peak widths at 5% height over the baseline, a line parallel to the baseline is drawn at the selected height. The point of intersection with the signal curve is the peak width. [Allotrope]
Peak width obtained at 50% height of the peak. For calculating the peak widths at 50% height over the baseline, a line parallel to the baseline is drawn at the selected height. The point of intersection with the signal curve is the peak width. [Allotrope]
The peak width as measured across 4 standard deviation of the peak. [Allotrope]
The dead cell brightness is a measure of the brightness of a dead cell. [Allotrope]
The percental live cell brightness is a measure of the brightness of a living cell. [Allotrope]
The feed auger speed is the number of rotations of the feed auger per units of time. [Allotrope]
feed auger speed in revolutions per minute (rpm)
The rotating speed of the screw supplying powder from the hopper to the tamping screw, measured in revolutions per minute (rpm). [Allotrope]
The roller speed in revolutions per unit of time. [Allotrope]
roller speed in revolutions per minute (rpm)
The tamping screw speed in revolutions per unit of time. [Allotrope]
tamping screw speed in revolutions per minute (rpm)
Internal transmittance refers to energy loss by absorption. [IUPAC]
total transmittance is that due to absorption, reflection, scatter, etc. [IUPAC]
The voltage of the photomultiplier. [Allotrope]
The Raman shift is the measured wave number in Raman spectroscopy that is a measure of the shift of energy between incident and emitted radiation. [Allotrope]
The aggregation rate is the amount of clustering per total cells. [Allotrope]
The manual debris count is the total number of debris per unit of volume that has been measured manually by inspection. [Allotrope]
The number of debris is the total amount of debris per unit of volume. [Allotrope]
The diffraction angle of 2? is the angle of the diffracted beam that is two times the angle of the incident beam. [Allotrope]
The format of the microplate. [Allotrope]
Percent of original light which is transmitted through a sample. [Allotrope]
Percent of light which is reflected on a sample. [Allotrope]
The percental debris is the fraction of debris compared to the sum of total number of cells plus the number of debris. [Allotrope]
The stability criterion defines the conditions for identification of an endpoint of a measurement. [Allotrope]
Strict criterion for the endpoint of a pH measurement: the measured signal should not change by more than 0.03 mV in 8 seconds or by more than 0.1 mV in 30 seconds. [Allotrope]
The closeness of agreement between independent measurement values obtained under stipulated conditions ([ISO 1) 5725] 3.12). Precision depends only on the distribution of random errors and does not relate to the true value of the measurement variable (accuracy). [Allotrope]
The minimum weight is the minimally required mass that can be weighed with the weighing instrument. [Allotrope]
The active cell volume is the volume of a heat cell that takes part in an experiment of differential scanning calorimetry. [Allotrope]
220 microliters active volume of a total volume of 350 microliters
The applied volume of the syringe. [Allotrope]
The amount of space that is contained within a container. [Allotrope]
The amount of space that is contained in total within a container. [Allotrope]
The amount of space that is available as content of container. [Allotrope]
The draw volume is the amount of volume that is aspirated. [Allotrope]
The dwell volume is the volume of the tubing between the point where the solvents are mixed and the inlet to the column. [Allotrope]
Volumetric capacity of the empty space that is not occupied by the stationary phase in chromatography. [Allotrope]
The volume of liquid moved by a single stroke of the piston in a piston pump. [Allotrope]
The nominal maximum volume of the syringe. [Allotrope]
The volume of the cavity present within a mixing chamber device. [Allotrope]
The minimum sample volume required for a device or process to work properly. [Allotrope]
The smallest change in voltage a device is able to accurately ad reliably measure. [Allotrope]
Electrical potential difference used to impart translational energy to ions. [IUPAC]
Accelerating voltage is often used as a synonym, but the terms are equivalent only in the case of a static accelerating potential. [IUPAC]
A setting datum that specifies the potential difference across the tip of the capillary in electrospray ionization. [CHMO]
The negative voltage applied to the capillary. [Allotrope]
The positive voltage applied to the capillary. [Allotrope]
The voltage that is applied to the capillary. [Allotrope]
Potential difference between the sampling cone/orifice in volts. [PSI-MS]
Potential difference between the orifice and the skimmer in volts. [PSI-MS]
The membrane potential is the difference in electric potential between the interior and the exterior of a cell wall or some other inorganic, semi-permiable membrane. [Allotrope]
The nozzle voltage is the voltage that is applied to the nozzle. [Allotrope]
Electric potential difference applied between the electrospray needle and the skimmer, which is typically held at the same potential as the counter electrode. [IUPAC]
The potential difference between two adjacent interface voltages. [Allotrope]
The power supply voltage is the electrical voltage that the power supply provides. [Allotrope]
Potential difference at the MS source in volts. [PSI-MS]
Potential difference setting of the tube in volts. [PSI-MS]
Factor to apply to acquired signal when viewing. This factor is not reflected in the raw data but will be applied by the viewer application. [Allotrope]
The vessel concentration range is the allowed range of concentrations that samples can have in a sample vessel. [Allotrope]
Object model identifier (vendor specific URI). [Allotrope]
instrument model: http://xyz.vendor.com/products/ms/series/MS1234
The light source that is used by the detector. [Allotrope]
The container of a sample passage. [Allotrope]
inlet reservoir, outlet reservoir, inlet vial, outlet vial
The focus width of an X-ray tube. [Allotrope]
The tube focus angle is the take off angle of the x-ray tube. [Allotrope]
The tube focus is the mode of the focus of an X-ray tube. [Allotrope]
The current of a tube that emits electromagnetic radiation. [Allotrope]
The tube axis defines whether the X-ray focuses on a point or is one line. [Allotrope]
The standard that the tray follows. [Allotrope]
ANSI SLAS 4-2004 (R2012) for microtiter plates
The layout specifies the positions of the vials on the tray. [Allotrope]
The transfering information over a channel. [Allotrope]
Transfer of an incoming signal on a channel. [Allotrope]
Transfer of an outgoing signal on a channel. [Allotrope]
Ratio of the number of ions leaving a region of a mass spectrometer to the number entering that region. [IUPAC]
Translation describes the displacement of an object in a linear direction relative to a reference position. [Allotrope]
sample displacement (length of the vector pointing in the direction of the translation)
Engineering tolerance is the permissible limit or limits of variation in: a physical dimension, a measured value or physical property of a material, manufactured object, system, or service, or other measured values (such as temperature, humidity, etc.). [Wikipedia]
The shape of the tip of an electrode. [Allotrope]
bulb, flat, injection tip, micro tip, spear shaped, spider type, etc.
The average time is the calulated mean value of a collection of time specific values. [Allotrope]
The event time is the property of a device to change its state within the given duration of time. [Allotrope]
event timing of an RF transmitter of an ssNMR spectrometer
The settling time of a flow cell is the period of time that the sample is allowed to stabilize and settle down in the flow cell. [Allotrope]
The time taken for the oven internal temperature to equilibrate to a constant temperature. [Allotrope]
Describes how long the laser beam was emitted from the laser device. [PSI-MS]
The refilling cycle time is the time interval after which a device needs to be refilled. [Allotrope]
The response time is the time after a measurement device responds with a measurement result. [Allotrope]
The septum purge time is the time interval from the injection to the opening of the septum purge valve. [Allotrope]
The time until the rest point is reached and the measured value has settled. [Allotrope]
The time when the purge valve is openend to purge the split vent. [Allotrope]
The cycle time when to alternate the polarity of the appropriate detector type. [Allotrope]
The amount of temperature change per time. [Allotrope]
The speed of temperature changes during cooling. [Allotrope]
The speed of temperature changes during heating. [Allotrope]
The bed temperature is the temperature of the tablets during the coating process. [Allotrope]
The calorimeter averaged cell temperature is the difference of temperature of the adiabatic jacket and the average of temperatures of both heating cells. [Allotrope]
The temperature of the capillary cartridge. [Allotrope]
The temperature that is applied to the capillary. [Allotrope]
Temperature of the compartment. [Allotrope]
The temperature of the container. [Allotrope]
The desolvation temperature is the temperature of the drying gas. [Allotrope]
The temperature of the detector. [Allotrope]
The exhaust temperature is the temperature of the air leaving the pan. [Allotrope]
The temperature of the inlet. [Allotrope]
The temperature that is related to the outlet. [Allotrope]
The oven temperature is the temperature to which an oven heats a sample or an enclosed space. [Allotrope]
The range of load weights within which taring is supported. [Allotrope]
A desciption of the intrinsic and extrinsic features and parts of the system. [Allotrope]
The amount of suction. Suction is the flow of a fluid into a partial vacuum, or region of low pressure. [Wikipedia]
The spray pattern air is the shape of the spray of air that is provided by a spray nozzle. [Allotrope]
Speed is a measure of the velocity of a process per time unit. [Allotrope]
The drum speed is the rate of revolutions of a drum expressed as number of rotations per unit of time. [Allotrope]
The feed velocity is a measure of speed of supplying a material to a device. [Allotrope]
The speed in revolutions per minute that the oscillating grinder will rotate. [Allotrope]
The turret speed is the rotational speed of the turret measured in revolutions per unit of time. [Allotrope]
turret speed expressed as revolutions per minute (rpm)
The radiance, L, at wavelength ? per unit wavelength interval. The SI unit is W m-3 sr-1, but a commonly used unit is W m-2 sr-1 nm-1. [IUPAC]
PAC, 1988, 60, 1449 (Nomenclature, symbols, units and their usage in spectrochemical analysis - VII. Molecular absorption spectroscopy, ultraviolet and visible (UV/VIS) (Recommendations 1988))
The variation of the spectral radiance with wavelength. [IUPAC]
Quantitative and qualitative declaration (tolerance) that describes a property or characteristic (e.g. repeatability, nonlinearity) of a (measuring) instrument. Sometimes, a differentiation is made between guaranteed and typical specifications. The value of the characteristic that is measured on the individual instrument must usually conform to the guaranteed specification after installation and after maintenance work (Equipment Qualification). A typical specification is based on the value attained by a large number of instruments. However, this value need not necessarily be matched by all instruments. With the assistance of the specification, an instrument’s suitability for its intended use can be evaluated before it is purchased (Design Qualification). A specification is usually stated as a (usually two-sided) tolerance interval (e.g. nonlinearity), or as a standard deviation (e.g. repeatability). [DOWT]
The most important specifications for describing the behavior of a weighing instrument are the nominal characteristics readability and weighing capacity, and the metrological characteristics repeatability, eccentric load, nonlinearity, sensitivity, temperature drift (of the sensitivity), and stability (of the sensitivity). Further characteristics are hysteresis, zero point stability, temperature drift of the zero point, load drift. [DOWT]
The mutual repulsion of particles of like charge that limits the current in a charged-particle beam and causes beams or packets of charged particles to expand radially over time. [PSI-MS]
The slit width is the distance between the two edges of a slit. [Allotrope]
The size of an object defined by its dimensions of space. [Allotrope]
The internal dimensions define the internal space available in the oven. [Allotrope]
The sensor or measurement device that is the origin of the signal. [Allotrope]
The material of the shaft of an electrode. [Allotrope]
teflon, glass, polyoxymethylene (POM), unbreakable plastic, steel, etc.
As a temperature measuring device increases in temperature, its effectiveness to accurately measure minute changes in temperature decreases. Sensitivity temperature drift is the drift of this sensitivity per unit of temperature. [Allotrope]
The sensitivity temperature drift is valid under the condition of a defined temperature or temperature range.
The change of sensitivity over a given range of time. [Allotrope]
The selectivity of a detector is the type of compound that the detector observes. [Allotrope]
Universal, organic compounds, (halides, nitrates, nitriles, peroxides,anhydrides, organometalics)
The selection of ports in a valve that are open. [Allotrope]
A configuration in a double-focusing mass spectrometer device that indicates whether the ion beam traverses the electric sector before the magnetic sector or the magnetic sector before the electric sector. [IUPAC]
The screen size is the mesh size that is used to grind the roller compacted ribbon. [Allotrope]
The amount of samples (signal measurements) per time. [Allotrope]
The sample distance is the length of a straight line from the position of the sample to a defined point of interest. [Allotrope]
The sample capacity is the total amount of samples that can be handled by a device. [Allotrope]
Rotation describes the turning of an object relative to a reference state. [Allotrope]
rotation of a goniometer in angular units
Measure of the ability of a mass spectrometer to provide a specified value of mass resolution. [IUPAC]
The procedure by which (m/z) was defined and measured, and the m/z value at which the measurement was made, should be reported. [IUPAC]
The resolution measurement method is a method that is used to define whether two peaks are separate. Its purpose is to determine the signal to noise ratio. [Allotrope]
Smallest difference between frequencies that can be distinguished. [Allotrope]
frequency resolution of an RF transmitter of a ssNMR spectrometer
The pulse time resolution is the minimally required time difference between pulses so that they can still be distinguished. [Allotrope]
pulse time resolution of a pulse generator of a ssNMR spectrometer
Smallest difference between temperatures that can meaningfully distinguished. [Allotrope]
L.S. Ettre, "Nomenclature for Chromatography", Pure & Appl. Chem. 1993, Vol. 65, No. 4, pp. 819-872
The pump compressibility factor corrects for the compressibility of mobile phases. [Allotrope]
The relative detector response factor expresses the sensitivity of a detector relative to a standard substance. It can be expressed on an equal mole, equal volume or equal mass (weight) basis: fi = (Ai /Ast) fst where A refers to the peak area of the compound of interest (subscript i) and standard (subscript st) respectively, and fst is the response factor of the standard compound. Usually, an arbitrary value (e.g., 1 or 100) is assigned to fst. [IUPAC]
Peak height relative to the base peak height. [Allotrope]
Receiver gain is a property of a ssNMR spectrometer that changes the amplitude of the FID with respect to the range of the digitizer. [Allotrope]
Readability is the capability of the smallest fraction of a division to which the index scale can be read with ease either by estimation or by the use of a vernier. It should normally be expressed in divisions of the pointer scale. [IUPAC]
Gas that flows over the sample. [Allotrope]
Qualification of device for a method. [Allotrope]
Describes output energy of the laser system. May be attenuated by filters or other means. [PSI-MS]
Gas that proetectes the balance or TMA-cell from reaction products and humidity. [Allotrope]
Denotes the specific label for a type of probe subdevice. [Allotrope]
Indicates whether the pressure in the system is greater, equal or lower than the environment. [Allotrope]
The differential pressure between the inlet and outlet pressures. [Wikipedia]
The pressure that is applied to the capillary. [Allotrope]
Inlet pressure of the carrier gas. [Allotrope]
The cell pressure is the pressure within the heating cell. [Allotrope]
The pressure of the container. [Allotrope]
The differential pressure between the pressure inside and outside of the film coater unit. Normally the pan is design ed to run at lower pressure than room to maintain any dust within the coater unit during the process. [Allotrope]
The pressure of the fluid flowing though the plumbing. [Allotrope]
Pressure at the inlet of a valve or pump. [Allotrope]
The inlet pressure at which the first indication of flow occurs (steady stream of bubbles). [Wikipedia]
The nebulizer pressure is the pressure used for nebulization of the liquid solution. [Allotrope]
Pressure at the outlet of a valve or pump. [Allotrope]
The pump pressure is the pressure that the pump produces on the fluid. [Allotrope]
The amount of overpressure. Overpressure is a pressure difference, relative to a normal pressure, in various circumstances. [Wikipedia]
The loss of pressure after going through a filter. [Allotrope]
The rhythmical throbbing or vibration of a flow pressure. [Allotrope]
The pressure at which there is no indication of flow. [Wikipedia]
The absolute precision given as standard deviation of the measured property. [Allotrope]
The relative precision given as relative standard deviation of the measured property. [Allotrope]
The power supply current is the electrical current that the power supply provides. [Allotrope]
In physics, power is the rate of doing work. It is equivalent to an amount of energy consumed per unit time. [Wikipedia]
The output power is the power that is provided by a device. [Allotrope]
output power as measured at the laser source of a Raman sprectrometer
output power of the amplifier of an ssNMR spectrometer
The amount of electrical power the device consumes. [Allotrope]
The power supply power is the electrical power that the power supply provides. [Allotrope]
The position of an entity such as the position of an instrument or the position of a container on a tray or in another containing container. [Allotrope]
vial position, rack position, sample position, device position
The phosphate dilution describes the label assigned to the specific dilution of a sample for analysis in a process involving a phosphate module. [Allotrope]
A ratio of the column inner diameter and the film thickness. [Allotrope]
The pathlength threshold is the upper limit of the range of the pathlength. [Allotrope]
The ratio of particles that a filter retains. [Allotrope]
The number of particles per volume. [Allotrope]
The relative amount of oxygen in the air. [Allotrope]
The language used in the operating system of the device. [Allotrope]
The operating condition is a surrounding condition that is required for operating the object. [Allotrope]
A value of an equipment property an equipment can operate with/at. [Allotrope]
A UV detector has the capability to operate the slit width with 1,2,5,10 or 20 µm
use this instead of has operating range if multiple discrete values define the range of possible values
A numerical and graphical change applied to every point in a data set where the value each point is changed by remains a constant. [Allotrope]
The nutrient/metabolite dilution describes the automatic dilution of the sample for analysis. [Allotrope]
In signal processing, noise is a general term for unwanted (and, in general, unknown) modifications that a signal may suffer during capture, storage, transmission, processing, or conversion. [Wikipedia]
Short term noise of a differential scanning calorimeter, usually measured in MicroCalories per degree Celsius.
A mode parameter which describes the type of solvent or solvent mixture used in a Thin Layer Chromatography (TLC) process. [Allotrope]
needs discussion, definition is about thin-layer chromatography, so probably not in scope of MVP
The resistance of a membrane. Resistance arises from the fact that the membrane impedes the movement of charges across it. [Wikipedia]
The material that the membrane consists of. [Allotrope]
The total air volume is the maximum throughput of air that can be handled by a device. [Allotrope]
total air volume of a drum of a tablet coater expressed as volume per unit of time
The material that the tip of the electrode consists of. [Allotrope]
The manufacturers name of a particular device. [Allotrope]
The manual of an object is a type of reference work, or other collection of instructions, that is intended to provide ready reference. [Wikipedia]
The maintenance describes rules for the upkeep of a physical entity. [Allotrope]
low maintenance, easy cleaning, special maintenance rules, etc.
Maintenance rules concerning the longterm storage of an electrode. [Allotrope]
protective glass tube with moistened sponge
Maintenance rules required for the short-term storage of an electrode. [Allotrope]
The numerical value which describes the amount of multiplicative optical apparent size manipulation being applied by an imaging device. [Allotrope]
A property of space that produces a force on a charged particle equal to qv x B where q is the particle charge and v its velocity. [PSI-MS]
Mass of an ion of known m/z value, derived from a suitable standard compound introduced into an ion source together with the sample to be analyzed, which permits real-time recalibration by correction of m/z shifts arising from instrumental drift. [IUPAC]
Place where the physical object is located. [Allotrope]
Flow of make-up liquid in a sheath flow interface. [IUPAC]
The extent to which a measured data set deviates from a theoretical, linear prediction. [Allotrope]
The absorption path length is defined as the length of the radiation path through the absorbing medium. [IUPAC]
The effective length of the capillary is measured from the inlet to the point of detection. [Allotrope]
The packaging length is the length of the capillary as provided in its packaged form. [Allotrope]
The total length of the capillary is measured from inlet to outlet. [Allotrope]
The length of the radiation path through the absorbing medium in a single-pass cell. [IUPAC]
The length of a chromatography column bed. [Allotrope]
The cut-off point is the length from a lens towards the laser beam of a particle sizer that a sample spray must confine to in order to be correctly analyzed. [Allotrope]
The depth is the length of an object measured from its top to the bottom or from the front to the back. [Allotrope]
The minimum immersion depth is the required depth of a sample solution surrounding the tip of the electrode in order to achieve a proper measurement (junction must be fully covered). [Allotrope]
The bore size is the diameter of the bore of a device. [Allotrope]
The capillary coating diameter is the thickness of the inner coating of the capillary. [Allotrope]
The capillary inner diameter is the diameter of the inside of the capillary. [Allotrope]
The capillary outer diameter is the diameter of the total wall of the capillary including all coatings. [Allotrope]
The capillary total diameter is a diameter measurement of the entire capillary tool, external wall included, not just the measurement of the internal cavity. [Allotrope]
Inner diameter of the column. [Allotrope]
The outer diameter specified for a chromatography column. [Allotrope]
The five gauss line diameter is the diameter of the circle centered at the midpoint of a magnet that defines the distance where the magnetic field strength drops below 5 Gauss. [Allotrope]
The inner diameter is the diameter of the inside of a device. [Allotrope]
The diameter of the syringe needle cavity. [Allotrope]
The outer diameter of the syringe needle. [Allotrope]
The outer diameter is the distance between the outer sides of a device. [Allotrope]
The rotor diameter is the outer diameter of a rotor. [Allotrope]
MAS probes are named based on the outer diameter of the rotor that is used with a particular probe. A 4.0 mm probe will use a 4.0 mm outer diameter rotor.
The sample diameter is the maximum allowed diameter that a sample can have in order to be correctly measured with a device. [Allotrope]
Shaft diameter of an electrode. [Allotrope]
The depth is the length of an object measured from its base to the top. [Allotrope]
The irradiated length is the length of the sample that is irradiated by the x-ray beam measured in the direction of the beam. It is determined by the divergence slit. [Allotrope]
Length of the loop tube. Normally volume should be used instead. [Allotrope]
The needle depth is the distance a needle travels during its insertion stroke. [Allotrope]
stroke of an injection needle by 50 millimeters
The length of the syringe needle. [Allotrope]
The observed length is the length of the sample that is observed by the detector (measured in the direction of the irradiating beam). The observed length is determined by the width of the anti scatter slit. [Allotrope]
The length the piston moves in a stroke of a a piston pump. [Allotrope]
The radius of a circle or sphere is the shortest connection between the center and the boundary. [Wikipedia]
The sample depth of a device is the maximum allowable depth dimention of a sample in order to correctly use that sample with that device. [Allotrope]
Shaft length of an electrode. [Allotrope]
The length of the field free drift space in a time of flight mass spectrometer. [PSI-MS]
The focus length of X-ray tube. [Allotrope]
The distance between two peaks of the emitted laser beam. [PSI-MS]
The length of something from side to side; the lesser of two of the three dimensions of a body. [Allotrope]
A device that provides a function for another device. [Allotrope]
The anode material is the material that the anode consists of. [Allotrope]
The cell material is the type of material that the heating cell consists of. [Allotrope]
Ratio of the number of ions generated to the number of molecules consumed in the ion source of a mass spectrometer. [IUPAC]
In some older literature the ionization efficiency is defined as the fraction of electrons or photons that ionize a fixed number of molecules. The ionization efficiency varies with both the energy and the number of the ionizing entities, and in such cases an ionization efficiency curve can provide useful thermochemical information. [IUPAC]
The ionization efficiency strictly refers to the ionization events in the ion source. The fraction of molecules that are ionized and are subsequently detected also depends on the detection sensitivity of the instrument used. [IUPAC]
The method for estimating the number of molecules consumed must always be clearly stated. [IUPAC]
ionisation efficiency
The temperature at which an ion source operates. [Allotrope]
Angle in which an ion beam is deflected magnetically in the magnetic sector. [Allotrope]
The internal buffer of an electrode is contained within the electrode and is separated from the test substance via a membrane and junction. In case of a glass electrode the internal solution is usually a pH=7 buffered solution of 0.1 mol/L KCl. [Allotrope]
An analog-to-digital converter is a device that converts a continuous physical quantity to a digital number that represents the quantity's amplitude. The conversion involves quantization of the input, so it necessarily introduces a small amount of error. Instead of doing a single conversion, an ADC often performs the conversions periodically. The result is a sequence of digital values that have been converted from a continuous-time and continuous-amplitude analog signal to a discrete-time and discrete-amplitude digital signal. [Wikipedia]
The ingress protection (IP) code, International Protection Marking, IEC standard 60529, sometimes interpreted as Ingress Protection Marking, classifies and rates the degree of protection provided against intrusion (body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. It is published by the International Electrotechnical Commission (IEC). [Wikipedia]
IP67 (fully dustproof and waterproof up to one meter depth for 30 minutes)
Describes the angle between the laser beam and the sample target. [PSI-MS]
The inlet air humidity is the relative humidity of the air at the inlet. [Allotrope]
The height equivalent to theoretical plates is the length of the column divided by the number of theoretical plates. [Allotrope]
The heating load is the amount of heat energy that would need to be added to a space to maintain the temperature in an acceptable range.
The coating of a BLI biosensor tip. [Allotrope]
Anti-hIgG-Fcrn Anti-mIgG-Fvrn Protein Lrn Protein Arn Protein Grn Anti-Penta-HIS (HIS) Streptavidin (SA) Super Streptavidin (SSA) Amine Reactive Second-Generation (AR2G) Anti-hIgG-Fc Capture (AHC) Anti-mIgG-Fc Capture (AMC) Aminopropylsilane (APS)
The software that is related to the device. [Allotrope]
2015-12-07 added as subproperty of has range. [Allotrope]
A range of value where the equipment can be operated without damage. [Allotrope]
The quantity range for an equipment property under operation. [Allotrope]
The measuring range of a device describes its capability to measure a quantity only within a defined range of values. [Allotrope]
Value of m/z above or below which ions cannot be detected in a mass spectrometer. [IUPAC]
The spectrum range is the range of wavelengths or wave numbers that can be measured by a spectrometer. [Allotrope]
Has function is a has part relation where the part is an active participant in the realization of a function of the whole. [Allotrope]
An electrical signal channel of the device. [Allotrope]
A device that has an detector as functional part. [Allotrope]
The device is temperature controlled by a temperature controller. [Allotrope]
The connector of a device allows its connection to other systems. [Allotrope]
URL of a communication port of the device on the ip based network. [Allotrope]
A calibration is the result of a process of calibration. [Allotrope]
The gun-to-bed distance is the distance between the spraygun and the bed of tablets of a tablet coater measured in the direction of the spraygun. [Allotrope]
The gun-to-bed angle is the angle between the spraygun and the bed of tablets of a tablet coater. [Allotrope]
The temperature for a gas chromatograph-mass spectrometer transfer line. [Allotrope]
gas chromatograph-mass spectrometer transfer line temperature
The distance between two rollers. [Allotrope]
In roller press, the gap provides the resistance for the powder blend requiring shear to force material through the gap. [Allotrope]
A feedback control that allows the roller compactor to maintain a constant gap. [Allotrope]
Ratio of output to input voltage, current, or power. [Allotrope]
The fuel of the detector such as hydrogen for an flame ionization detector. [Allotrope]
Electric or magnetic field that extends from the edge of an electric sector, magnetic sector, lens, or other ion optics element. [IUPAC]
In tableting, friability is the measure of the reduction in tablet weight due to edge chipping by rotating a set quantity of tablets in a contained baffled drum for a set time. [Allotrope]
The frequency is the number of cycles per time unit. [Allotrope]
frequency of electromagnetic radiation in Hz
The base frequency of an NMR spectrometer is the resonance frequency of 1H measured in rotations of the nucleus per time unit. [Allotrope]
The frequency of the alternating current power supply. [Allotrope]
The pulse nutation frequency is the nutation frequency of the spins given a pulse of a particular power. [Allotrope]
100 kHz RF pulse will rotate the spins at a frequency of 100 kHz.
A setting datum that specifies the potential difference in a mass spectrometer where labile ions may dissociate. [PSI-MS]
A feedback control that allows the roller compactor to maintain a constant force. [Allotrope]
Describes the diameter of the laser beam in x direction. [PSI-MS]
Describes the diameter of the laser beam in y direction. [PSI-MS]
The focal distance is the optical distance from the point of convergence of rays of light to the digital sensor at the focal plane in a camera. It is a measure of the angle of view and the magnification. A long focal length has a narrow angle of view and high magnification. A short focal length has a wide angle of view and low magnification. [Allotrope]
The carrier gas linear velocity affects the analysis in the same way that temperature does (see above). The higher the linear velocity the faster the analysis, but the lower the separation between analytes. Selecting the linear velocity is therefore the same compromise between the level of separation and length of analysis as selecting the column temperature. The linear velocity will be implemented by means of the carrier gas flow rate, with regards to the inner diameter of the column. [Wikipedia]
The volume of mobile phase passing through the column per unit of time during a chromatogrphy process. [Allotrope]
The desolvation gas flow is the rate of gas that passes through the ion source in order to evaporate and remove the solvent. The rate is expressed as volume per time unit. [Allotrope]
The drying gas flow rate is the volume of drying gas per unit of time. [Allotrope]
Flow rate for the detector fuel gas. [Allotrope]
Mass of a material crossing a surface divided by the time. [IUPAC]
Flow rate for the oxidizer (air) gas. [Allotrope]
The pump flow rate is the pumped amount of material expressed as volume per unit of time. [Allotrope]
The gas/electrolyte flow records the pump flow rate for the gas/electrolyte module. [Allotrope]
The IgG flow records the pump flow rate for the IgG module. [Allotrope]
The nutrient/metabolite flow records the pump flow rate for the nutrient/metabolite module. [Allotrope]
The phosphate flow is the pump flow rate for the phosphate module. [Allotrope]
The flow rate of the septum purge valve. [Allotrope]
A super-heated gas collinear and concentric to the inlet to improve ion drying from the electrospray plume (adapted from Agilent manual). [Allotrope]
The split vent purge flow rate is the flow rate of the purge solution used for purging the split vent. [Allotrope]
The spray rate is a specialized type of flow rate that applies to devices that produce sprays of liquids. Typically it is governed by the peristaltic pump and is measured by a flow meter. [Allotrope]
spray rate of a spray gun of a tablet coater
The rate of transfer of a fluid measured either by some value of volume per time increment or some measure of mass per time increment. [Allotrope]
Volume of a component crossing a surface divided by the time. [IUPAC]
The thickness of a filter is the distance between its top and bottom surface. [Allotrope]
The film thickness is the thickness of the stationary phase on the inner side of the column. [Allotrope]
for example, with open-tubular columns expresses the average thickness of the stationary phase film coated on the inside wall of the tubing.
The property of filling level is a measure of the filling of an entity with another part or thing. [Allotrope]
waste container cup level of a cell counter analyzer
The helium filling level is the amount of helium contained in the device. [Allotrope]
A section of a mass spectrometer in which there are no electric or magnetic fields. [PSI-MS]
The membrane of an electrode separates the outer test substance from the internal electrode. In case of a glass electrode the internal solution is usually a pH=7 buffered solution of 0.1 mol/L KCl. [Allotrope]
The electrical resistance of a junction is the opposition to the passage of an electric current through that junction. [Allotrope]
The material that the junction consists of. [Allotrope]
teflon, ceramic, A41 glass, HF glass, etc.
The connector of an electrode is used to attach it to the pH meter. [Allotrope]
DIN-EL-0 S7 plug, Lemo connector, BNC, etc.
The magnitude of the force per unit charge at a given point in space. [PSI-MS]
The eccentricity is valid under the condition of a defined weight.
Eccentricity is defined as the error relating to variations in the positioning of weights onto the weighing pan. [Allotrope]
K. K. Murray, R. K. Boyd, M. N. Eberlin, G. J. Langley, L. Li and Y. Naito, Pure Appl. Chem., 2013, 85, 1515-1609
Inert gas that is used to promote the removal of solvent from aerosol particles in spray ionization. [IUPAC]
Disintegration is the process of the tablet reducing to its component parts in the presence of a liquid media and shear. [Allotrope]
The rate of signal sampling (measurement) with respect to time. [PSI-MS]
The mode of a detector describes its settings that are related to the process of data acquisition. [Allotrope]
0D mode of an XRD detector, 1D scanning mode, static mode
The filter of a detector filters the range of wavelengths that are detected to the given range. [Allotrope]
The detection angle is the angle observed by a detector. [Allotrope]
Receiver (target) of the information transported over the channel. [Allotrope]
Sender (source) of the information transported over the channel. [Allotrope]
The number of decontaminations per time. [Allotrope]
In telecommunication, data signaling rate (DSR), also known as gross bit rate, is the aggregate rate at which data pass a point in the transmission path of a data transmission system. [Wikipedia]
FDA Guidance for Industry Sterile Drug Products Produced by Aseptic Processing — Current Good Manufacturing Practice
The time (in minutes) of exposure at a given temperature that causes a one-log or 90 percent reduction in the population of a specific microorganism. [FDA]
Stream of inert gas, often heated, that is used in an electrospray or other spray ionization source to aid in the evaporation of solvent from the sprayed particles. The flow of the gas is in the direction opposite to that of the spray. [IUPAC]
Curtain gas is a proprietary term used to indicate a flow of counter-current gas emanating from between two closely spaced plates each with a central orifice along the axis of a spray ionization source. The term should only be used to describe the commercial device. [IUPAC]
Counter electrode in an electrospray ionization ion source is one of two electrodes between which the high electric potential is applied, the other electrode being the electrospray needle. [IUPAC]
The cooling load is the amount of heat energy that would need to be removed from a space (cooling) to maintain the temperature in an acceptable range. [Allotrope]
Contrast is the difference in luminance or color that makes an object (or its representation in an image or display) distinguishable. In visual perception of the real world, contrast is determined by the difference in the color and brightness of the object and other objects within the same field of view. [Wikipedia]
The mode of communication one-directional (simplex) or bidirectional simultanuous (duplex) or not simultanuous (half-duplex). [Allotrope]
A counter-current of neutral, heated gas, typically nitrogen, which evaporates the solvent, decreasing the inlet sample droplet size. [Allotrope]
Ranges dependent on installed Spray chamber: Electrospray, nano-spray, etc.
specification of compatible pH range for the column. [Allotrope]
Code for a cleanroom standard specification that is statisfied. [Allotrope]
The cell density is the density of cells in a sample. [Allotrope]
The cell constant of a heat cell is the ratio between the theoretical heat of melting and the observed heat of melting of a standard sample. [Allotrope]
The cell constant c of a electrochemical cell describes the relation of the distance (d) between the electrodes compared to their cross-sectional area (A). c = d/A. [Allotrope]
cell constant of an electrochemical cell
The relative amount of carbon dioxide in the air. [Allotrope]
The outlet of the capillary. [Allotrope]
The internal coating of the capillary is a coating that covers its inner surface. [Allotrope]
The external coating of the capillary is a coating that covers its outer surface. [Allotrope]
The current that is applied to the electrophoresis capillary column. [Allotrope]
Inert gas used for collisional reduction of the internal or translational energy of ions, such as in ion traps. [Allotrope]
The bit resolution assists in the conversion of an analog voltage to a digital value within electronic systems. [Allotrope]
A biosafety level is a level of the biocontainment precautions required to isolate dangerous biological agents in an enclosed laboratory facility. The levels of containment range from the lowest biosafety level 1 (BSL-1) to the highest at level 4 (BSL-4). [Wikipedia]
The value of this property should be a code pointing to the external standard.
CDC biosafety classification of biosafety cabinet. [CDC]
A population of microorganisms inoculated onto a suitable medium (e.g., solution, container or closure) and placed within appropriate sterilizer load locations to determine the sterilization cycle efficacy of a physical or chemical process. The challenge microorganism is selected based upon its resistance to the given process. Incoming lot D-value and microbiological count define the quality of the BI. [FDA]
The angle of the bevel at the tip of the needle. [Allotrope]
20° bevel that is optimized for penetrating GC septa
The fluid used in the bath for regulating the temperature. [Allotrope]
Bandwidth is the difference between the upper and lower frequencies in a continuous set of frequencies. [Wikipedia]
The bandwidth is equal to its upper cutoff frequency on a low-pass filter or baseband signal. [Wikipedia]
Passband bandwidth is the difference between the upper and lower cutoff frequencies of, for example, a band-pass filter, a communication channel, or a signal spectrum. [Wikipedia]
The precision is expressed by the standard deviation of the instrument for a stated load (e.g. s20 for a 20 g load). A statement of the procedure, conditions, and experience of the observer should be included. [IUPAC]
The atomizing air pressure is the pressure of air that is used for the atomization of the suspension in order to produce a spray. [Allotrope]
The atomizing air flow is the flow rate of air that is used for the atomization of the suspension in order to produce a spray. [Allotrope]
Minimum energy that must be imparted to an atom or molecule to produce a detectable amount of a specified ion. In electron ionization mass spectrometry, minimum electron energy necessary for the detection of a given fragment ion. [IUPAC]
This experimental quantity can vary with the detection sensitivity of the instrument used, reflecting different kinetic shifts. [IUPAC]
Total flow of gas to atmosphere pressure ionization source. [Allotrope]
The angular velocity is defined as the rate of change of angular displacement and is a vector quantity (more precisely, a pseudovector) which specifies the angular speed (rotational speed) of an object and the axis about which the object is rotating. [Wikipedia]
The step size which is defined by the user or the program. [Allotrope]
An input offset is an additive value that is applied to analog input data before it is digitized. [Allotrope]
An established microbial or airborne particle level giving early warning of potential drift from normal operating conditions and triggers appropriate scrutiny and follow-up to address the potential problem. Alert levels are always lower than action levels. [FDA]
The absorbance threshold is the maximally allowed value of the measured absorbance in order to be an accepted value. [Allotrope]
The nuclear spin frequency for a 1H nuclei in a magnetic field strength calculated as nu = (-gamma Bo)/2pi where gamma is the nuclear gyromagnetic ratio (26.75221 x 10^7 rad T-1s-1) for the 1H nucleus and Bo is the magnet field strength expressed in Tesla. [Allotrope]
A magnet of field strength 11.74 Tesla results, when plugged into this simple formula, in a precession frequency of 500 MHz; in this case the spectrometer is referred, in common parlance, as a 500MHz NMR spectrometer.
The nuclear spin frequency for a 13C nuclei in a magnetic field strength calculated as nu = (-gamma Bo)/2pi where gamma is the nuclear gyromagnetic ratio (6.728 x 107 rad T-1s-1) for the 13C nucleus and Bo is the magnet field strength expressed in Tesla. [Allotrope]
The nuclear larmor frequency at a given field strength for an atom of Flourine-19. [Allotrope]
An established microbial or airborne particle level that, when exceeded, should trigger appropriate investigation and corrective action based on the investigation. [FDA]
The accuracy given as standard derivation of the measured property. [Allotrope]
The accuracy given as relative standard derivation of the measured property. [Allotrope]
The acquisition delay is the time between the injection and the start of the data acquisition. [Allotrope]
delay of 2 seconds after injection in order to reduce the amount of data of plain solvent because it takes some time after the injection until the sample reaches the detector
A relation to a class of measuring instruments or measuring systems that meet stated metrological requirements that are intended to keep measurement errors or instrumental uncertainties within specified limits under specified operating conditions. [Allotrope]
Separation of weighing instruments into different accuracy classes and assignment of different instrument types to classes of identical accuracy. The international recommendation [OIML R 76-1] and EC directives divide weighing instruments into the following accuracy classes (by decreasing accuracy): Weighing instrument of special accuracy I , weighing instrument of high accuracy II , weighing instrument of medium accuracy III , and weighing instrument of ordinary accuracy IIII ([OIML R 76-1] 3.1.1). [DOWT]
Classes containing error limits for weights that are in systematic steps to fulfill different requirements. In most cases the error limits proceed from class to class in logarithmic steps, i.e. for each step the relative error limit increases (or decreases) by the same factor. Examples of the assignment of weight pieces to accuracy classes are: 1. OIML weight classes (international) 2. ASTM weight classes (USA) 3. Medium accuracy weights (Directive on Medium Accuracy Weights 71/317/EEC) 4. Weights of above-medium accuracy (Directive on Above-Medium Accuracy Weights, 74/148/EEC). [DOWT]
The active length is the size of the window of angles that are observed at the same time by a detector. [Allotrope]
An ADC has several sources of errors. Quantization error and (assuming the ADC is intended to be linear) non-linearity are intrinsic to any analog-to-digital conversion. These errors are measured in a unit called the least significant bit (LSB). [Wikipedia]
The analog signal is continuous in time and it is necessary to convert this to a flow of digital values. It is therefore required to define the rate at which new digital values are sampled from the analog signal. The rate of new values is called the sampling rate or sampling frequency of the converter. [Wikipedia]
The nutrient dilution factor is the dilution factor of the nutrient solution. [Allotrope]
The metabolite dilution factor is the dilution factor of the metabolite solution. [Allotrope]
The cell density dilution factor is the dilution factor of the sample solution. [Allotrope]
The average radius of the pores within the solid particles. [IUPAC]
Indicates a particular condition of something is in at a specific time. [Allotrope]
Relation between a process and a part of it. The subprocess occurs as temporal part of the process. [Allotrope]
The distance through an object, as distinct from width or height measured from top to bottom. [Allotrope]
Length of space between two points. [Allotrope]
An electric current is a flow of electric charge. [Wikipedia]
A rate is a ratio quantity defined as the measure of some quantity with respect to another, independant measured quantity. [Allotrope]
A level is a kind of ranking that references to a scale. [Allotrope]
The gas that is related to an entity. [Allotrope]
The material that is related to an entity. [Allotrope]
A mode is a kind of setting or operation related to an entity. [Allotrope]
A threshold is a limit or boundary that separates two sides. [Allotrope]
A code that is related to an entity which comes from a controlled list. A code is not a replacement for IRIs or Strings. [Allotrope]
The ion that is related to an entity. [Allotrope]
The corrected relative peak area is the resulting relative peak area after application of a correction. [Allotrope]
A titer is a way of expressing concentration. Titer testing employs serial dilution to obtain approximate quantitative information from an analytical procedure that inherently only evaluates as positive or negative. The titer corresponds to the highest dilution factor that still yields a positive reading. [Wikipedia]
Positive readings in the first 8 serial twofold dilutions translate into a titer of 1:256 (i.e., 2-8). Titers are sometimes expressed by the denominator only, for example 1:256 is written 256. [Wikipedia]
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997)
PAC, 1990, 62, 2167. Glossary of atmospheric chemistry terms (Recommendations 1990)
PAC, 1996, 68, 957. Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)
Internal energy of a system plus the product of pressure and volume. Its change in a system is equal to the heat brought to the system at constant pressure. [IUPAC]
This property describes how something looks to visual inspection. [Allotrope]
A systematic description or representation of something that shares important characteristics with the object. [Allotrope]
The coating is a substance that covers a surface. [Allotrope]
The filter class according to a test standard. [Allotrope]
E10, E11, E12, H13, H14, U15, U16, U17 from test standard BS EN779
G1, G2, G3, G4, M5, M6, M7, F8, F9 from test standard BS EN1822
The ratio of the adjusted or net retention volume (time) or retention factor of a component relative to that of a standard, obtained under identical condition. [IUPAC]
A measurement result like a chromatogram can have a list of associated peaks or peak groups. [Allotrope]
may be subproperty of 'has part' or of 'is about' depending on the context
Associates a peak list, chromatogram or spectrum with the peak. [Allotrope]
Number density is an intensive quantity used to describe the degree of concentration of countable objects (particles, molecules, phonons, cells, galaxies, etc.) in physical space: three-dimensional volume number density, two-dimensional area number density, or one-dimensional line number density. [Wikipedia]
Volume number density is the number density in three-dimensional physical space. [Allotrope]
Area number density is the number density in two-dimensional physical space. [Allotrope]
Line number density is the number density in one-dimensional physical space. [Allotrope]
The number of debris particles per volume. [Allotrope]
The attenuation coefficient is analogous to absorption coefficient but taking into account also the effects due to scattering and luminescence. [IUPAC]
The force applied on the sample in a centrifuge, described as a multiplicative of the gravitational constant g. The RCF is determined by two factors — the radius of the rotor and the rotational speed squared. [Allotrope]
Average of replicate indications minus a reference quantity value. [VIM]
The tune file that is related to a mass spectrometer run. [Allotrope]
The position of the injector. [Allotrope]
A relation to a sample, such as measured sample, input sample. [Allotrope]
A solvent that is used for a process or in an equipment. [Allotrope]
A buffer that is used in a process or equipment. [Allotrope]
A relation of something to a file. [Allotrope]
The length of a cylindrical or tubular shaped object along the non-circular dimension. [Allotrope]
Holds between function f and quality q such that function f is realized by a process that changes quality q to some other instance q'. [Allotrope]
An atom has subatomic particles as its proper parts.
This relation obtains between a planned process and a objective specification when the criteria specified in the objective specification are met at the end of the planned process. [OBI]
This relation obtains between an objective specification and a planned process when the criteria specified in the objective specification are met at the end of the planned process. [OBI]
The sum of a series of observations divided by the number of observations. Symbol: x. [IUPAC]
The background intensity is the average pixel value of the image background. [Allotrope]
The property of background zero tells if a baseline correction is applied. [Allotrope]
The difference between the population mean and the true value, paying regard to sign. Symbol: D. Comment: Bias is the total systematic error. [IUPAC]
PAC, 1991, 63, 1541 (Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991))
Absolute value of charge of an ion divided by the value of the elementary charge (e) rounded to the nearest integer. [IUPAC]
The number of protons in the atomic nucleus. [IUPAC]
The circularity is a measure of the circular shape of cells (roundness) expressed as numerical value. [Allotrope]
The compactness is the deviation of the cells from ideal spheres expressed as numerical value. 1 is the value of an ideally spherical cell, higher vlaues indicate the extent of variation and therefore the overall state of the cell culture (e.g. damage caused by shear force etc.). [Allotrope]
The probability of covering the expected value of an estimated parameter with an interval estimate for that parameter. (Symbol 1-a). The confidence level can be expressed as a number between 0 and 1, or in percent. The complementary quantity a is known as the Significance level. Comment: In some cases the Confidence Level is dictated by the needs of the situation. In all other instances, use of 1-a = 0.95 is recommended. [IUPAC]
Symmetric confidence limits (±C) about the estimated mean forming an interval that covers the population mean with probability 1-a. [IUPAC]
The number of cells counted. [Allotrope]
The dead cell count is the number of dead cells. [Allotrope]
The number of nucleated cells in the sample. [Allotrope]
The total number of cell count is live plus dead cells. [Allotrope]
The viable cell count is the number of living cells. [Allotrope]
The number of included images is the number of images that are chosen for the statistical evaluation of the measurement. [Allotrope]
The number of ions injected to generate the mass spectrum. [Allotrope]
The total number of points observed by a conscious observer over the course of an experiment or series of experiments. [Allotrope]
The total number of recorded images. [Allotrope]
The value of a cross-validation. Cross-validation is a comparison of validation parameters when two or more bioanalytical methods are used to generate data within the same study or across different studies. An example of cross-validation would be a situation where an original validated bioanalytical method serves as the reference and the revised bioanalytical method is the comparator. The comparisons should be done both ways. [FDA]
Date/time the process execution is completed. [Allotrope]
Point in time when an event ends. [Allotrope]
Point in time when an event starts. [Allotrope]
Date/time the process is executed. [Allotrope]
The decluster degree is the numerical level of declustering of clustered cells that is applied to the cell counting analysis. It increases the ability of the software to detect cells that are clumped together. [Allotrope]
The number of observations minus the number of fitted parameters. Symbol: n. For linear calibration curves n = m - 2. [IUPAC]
The difference between an observed value and the arithmetic mean of the set to which it belongs. Symbol: d. [IUPAC]
The chemical symbols of elements are (in most cases) derived from their Latin names and consist of one or two letters which should always be printed in roman (upright) type. Only for elements of atomic number greater than 103, the systematic symbols consist of three letters. [IUPAC]
If in a series of observations a statistical weight (wi) is assigned to each value, a weighted mean can be calculated. Comment: Unless the weights can be assigned objectively, the use of the weighted mean is not normally recommended. [IUPAC]
The number of the software version. [Allotrope]
The square of the population standard deviation. Symbol: V or s2. [IUPAC]
The quantity of uptakes to aspirate a given sample. [Allotrope]
It is possible to estimate standard deviations from larger sets of duplicate measurements made on similar (but not necessarily identical) samples. If m samples are analyzed with the results xi’ and xi’’, (pertaining to the ith paired measurements), the standard deviation can be calculated by the formula with n = m degrees of freedom. A text on statistics should be consulted regarding conditions for pairing. [IUPAC]
If several sets of analyses are performed (e.g., at different times or on slightly different samples), results may be collected into groups. The overall standard deviation can be calculated. [IUPAC]
The standard deviation is a measure for the variation of a series of data values. [Allotrope]
The datatype property of the live cell count standard deviation. [Allotrope]
The datatype property of the live standard deviation. [Allotrope]
The spin system assignment based on first- and second-order effects and related to the coupling constant and chemical shift difference between coupled nuclei. [Allotrope]
The difference between the largest and the smallest observed value. Symbol: Rx. [IUPAC]
This quantity is especially useful for small data sets (n<10), as an alternative measure of dispersion. Its principal use is in connection with control charts. [IUPAC]
The property of scatter correction tells if a scatter correction is applied. [Allotrope]
The number of repetitions of a process. [Allotrope]
The standard deviation divided by the mean of the series. Symbol: sr (or sr). [IUPAC]
The value of the relative standard deviation, expressed in percent. Symbol: sr (%) [or sr (%)]. It can be calculated from the relative standard deviation by multiplying by 100. [IUPAC]
The error divided by the true value. Symbol: er. [IUPAC]
The relative error expressed in percent. Symbol: er(%). It can be calculated from the relative error by multiplying by 100. [IUPAC]
The read is a readout value that gives information about an observation. [Allotrope]
The raw value of the measurement. [Allotrope]
The square root of the expression, in which the sum of squared observations is divided by the number n. Symbol: x q. [IUPAC]
The pre-dilution multiplier. [Allotrope]
A possible charge state of the ion in a situation where the charge of an ion is known to be one of several possible values rather than a completely unknown value or determined to be a specific charge with reasonable certainty. [PSI-MS]
The identifier of the microtiter plate. [Allotrope]
pearson product-moment correlation coefficient
In statistics, the Pearson product-moment correlation coefficient (sometimes referred to as the PPMCC or PCC or Pearson's r) is a measure of the linear correlation between two variables X and Y, giving a value between +1 and ?1 inclusive, where 1 is total positive correlation, 0 is no correlation, and ?1 is total negative correlation. It is widely used in the sciences as a measure of the degree of linear dependence between two variables. [Wikipedia]
The standard curve is used as reference and thus included in the R factor. The R factor is an indicator for experiment sanity.
The number of steps is the amount of stages needed to complete a process. [Allotrope]
2015-12-14 Generalized definition and preferred label. [Allotrope]
Number of scans to be collected refers to the individual scans to be performed in order to diminish the signal to noise ratio. [Allotrope]
number of NMR scans, typical range for H-1 :16-64, for C-13 128 to 6,000 [Bruker]
The number of flush cycles to be used for sample introduction. [Allotrope]
The number of rescans is the number of repetitions of scans. [Allotrope]
The number of points is the total number of points sampled during a measurement. [Allotrope]
In a spectrum, the number of points is the total number of peak positions.
The number of measurements is the total number of measurements of a process. [Allotrope]
The number of images to take for the cell counter analysis of a sample. [Allotrope]
The number of mixing cycles to be used for mixing in a dye. [Allotrope]
Number of dummy scans refers to scans performed by the instrument as part of equilibration phase prior to utilizing any of the samples of interest. [Allotrope]
The number of decimal places is the number of digits after the decimal point. [Allotrope]
The value of the variable occurring with the greatest frequency in the series of observations. [IUPAC]
The use of mode when reporting results of chemical analysis is generally not recommended.
Depending on whether the number of observations is even or odd, the median can be estimated as follows: (a): If n = 2m + 1: The middle value of a series of observations, arranged in increasing or decreasing order. (b): If n = 2m: The arithmetic mean of the two middle values of a series of observations, arranged in increasing or decreasing order. [IUPAC]
Sum of the numbers of protons and neutrons in an atom, molecule, or ion. [IUPAC]
When expressed as a mass in daltons, mass number is equivalent to nominal mass. [IUPAC]
The boolean property states if the related measurement result is a single measurement result or if it is has multiple measurement results. [Allotrope]
A boolean facet of a data point indicating that the data point is included in a statistical evaluation. [Allotrope]
The property of included in regression tells if a data point is included in the calculation of the regression. [Allotrope]
The measurement result is performed on a blank sample. [Allotrope]
The flag "inside reference range" specifies if a result is inside or outside its reference range. [Allotrope]
For a blood gas analysis measurement, the measured pH value is valid if it is within the user-specified reference range.
An identifier is a name that identifies (that is, labels the identity of) either a unique object or a unique class of objects, where the "object" or class may be an idea, physical [countable] object (or class thereof), or physical [noncountable] substance (or class thereof). The abbreviation ID often refers to identity, identification (the process of identifying), or an identifier (that is, an instance of identification). An identifier may be a word, number, letter, symbol, or any combination of those. [Wikipedia]
A unique combination of numbers, letters, and/or symbols that identifies a batch (or lot) and from which the production and distribution history can be determined. [ICH_Q7]
The hit quality index is a measure of closeness between two sets of data points. [Allotrope]
The number of observations, divided by the sum of reciprocals of the observations. Symbol: x h. [IUPAC]
The n-th root of the product of the absolute values of the observations, taken with the proper sign. Symbol xg. [IUPAC]
The expiry date of the material defines until what date it is allowed to use the material. [Allotrope]
The boolean property of "exotherm upwards" describes whether a differential scanning calorimetry curve is plotted with exothermic direction upwards or downwards. [Allotrope]
The value of the result minus the true value (signed quantity). Symbol: e. [IUPAC]
Autoclavable electrodes can be used within an autoclave. [Allotrope]
A waterproof device can handle exposition to humidity. [Allotrope]
Property indicating whether the equipment is disposed after the use. [Allotrope]
A value an equipment property can operate with/at. [Allotrope]
The point of time when the object first started its operation. [Allotrope]
The number of spray guns is the total amount of spray guns that are used by a device. [Allotrope]
The number of size classes is the total number of detected classes of particle sizes. [Allotrope]
The number of shims is the amount of shims of a device. [Allotrope]
The number of RF channels is the amount of RF channels connected to the device. [Allotrope]
The number of positions of a tray. [Allotrope]
The number of injections that have run through the column. [Allotrope]
The boolean value of lid open tells if the cap is open or closed. [Allotrope]
Date when the object has been installed. [Allotrope]
The number or code used within the asset / inventory management system associated with the equipment. [Allotrope]
An internal identifier is an identifier that is used internally at companies. [Allotrope]
Enables autoignition of the flame for the appropriate detector types. [Allotrope]
A boolean parameter mode which enables the filament for appropriate detector type devices. [Allotrope]
When oscillating, the grinder will move back and forth ‘x’ degrees from the origin. [Allotrope]
Date when the object was used last time. [Allotrope]
Serial number of the device as defined by the manufacturer. It may not be unique outside the product line. [Allotrope]
The immutable serial number as specified by the manufacturer. [Allotrope]
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A device produces a material or data output. [Allotrope]