Concentration (conc.)

Concentration (conc.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Conc. Definition in words Kind-of-quantity of component B divided by volume of system 1 Note: “Concentration” indicates that the system is a liquid system Systematic...

Diameter (diam.)

Diameter (diam.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Diam. Definition in words Two times radius of component B Definition by equation Systematic terms Diameter of component B in system 1 Result type Rational scale Value sets are positive...

Distribution width

Distribution width OverviewExamplesConcept relationsshipHistoryDetails Definition in words Unspecific volume of component B in system 1 Note: Distrution width refers to statistical parameters of volume, e.g. coefficient variation or standard deviation of volume of a...

Duration

Duration OverviewExamplesConcept relationsshipHistoryDetails Synonym Time, time elapsed, age, life expectancy, time difference Definition in words A specific moment of time minus another specific moment of time Note 1: Time is a SI base kind-of-quantity Note...

Entitic area

Entitic area OverviewExamplesConcept relationsshipHistoryDetails Definition in words The area of component divided by the number of component B Alternative expression: Average area of component B Definition by equation Systematic terms Entitic area of component B in...

Entitic diameter

Entitic diameter OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Entitic am.s. Definition in words Diameter of component B divided by number of component B Alternative: Average diameter of component B Definition by equation Systematic terms...

Amount-of-substance (am.s.)

Amount-of-substance (am.s.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Chemical amount Abbreviation Am.s., substance (subst.) Definition in words Number of elementary entities (component B) divided by Avogadro constant in system 1. Note 1: Avogadro...

Entitic mass

Entitic mass OverviewExamplesConcept relationsshipHistoryDetails Definition in words Mass of component B divided by number of entities (component B or system 1) in a system Alternative: Average mass of component B in a system or mass of component per system 1 in...

Arbitrary activity (arb.act.)

Arbitrary activity (arb.act.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Arb.act. Definition in words Arbitrary activity of component B in system 1 (Ratio scale) Arbitrary activity of component B in system 1 compared with arbitrary activity of...

Arbitrary number (arb.num.)

Arbitrary number (arb.num.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Arb.num. Definition in words Arbitrary number of component B in system 1 (Ratio scale, see Definition by equation). Arbitrary number of component B in system 1 compared with...

Arbitrary concentration (arb.c.)

Arbitrary concentration (arb.c.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Arb.c. Definition in words Concentration of component B in system 1 compared with concentration of component B in a reference system Note: The reference system is defined...

Arbitrary number ratio

Arbitrary number ratio OverviewExamplesConcept relationsshipHistoryDetails Definition in words Number ratio of component B in system 1 compared with number ratio of component B in a reference system Note: The reference system is defined by the laboratory Result type...

Arbitrary pressure (arb.pr.)

Arbitrary pressure (arb.pr.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Chemical amount Abbreviation Arb.pr. Definition in words Arbitrary pressure of component B in system 1 Definition by equation Result type Rational scale Value sets are positive...

Arbitrary rate (arb.rate)

Arbitrary rate (arb.rate) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Arb.rate Definition in words Arbitrary rate of component B in system 1 compared with arbitrary rate of component B in a reference system Note 1: The reference system is defined...

Arbitrary content (arb.cont.)

Arbitrary content (arb.cont.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Arb.cont. Definition in words Arbitrary content of component B in system 1 compared with arbitrary content of component B in a reference system. Note 1: The reference...

Expiry

Expiry OverviewExamplesConcept relationsshipHistoryDetails Definition in words The end of the period for which something is valid. Systematic terms Expiry of component B in system 1 Result type Ordinal scale Value set is ranked accoding to magnitude The value set and...

Attenuance

Attenuance OverviewExamplesConcept relationsshipHistoryDetails Definition in words Negative decadig logarithm of internal transmittance of a parallel beam of a rediation through that medium (system 1) Definition by equation Systematic terms Attenuance of system 1...

Catalytic-activity (cat.act.)

Catalytic-activity (cat.act.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Enzyme activity, enzymatic activity, catalytic amount Abbreviation Cat.act. Definition in words Difference of amount-of-substance of component D at two points of time divided by...

Frequency

Frequency OverviewExamplesConcept relationsshipHistoryDetails Synonym Number rate of regular event Definition in words Number of regular events divided by time elapsed Alternative expression: Number of periodic phenomenon per time Note: Regular event is an event that...

Gas tension (tension)

Gas tension (tension) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Tension Definition in words Partial pressure of a component in a gas phase in equilibrium with the same component dissolved in a liquid phase Definition by equation  ...

Arbitrary fraction (arb.fr.)

Arbitrary fraction (arb.fr.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Arb.fr. Definition in words Fraction of component B in system 1 compared with fraction of component B in a reference system. Note: The reference system is defined by the...

Arbitrary time (arb.time)

Arbitrary time (arb.time) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Arb.time Definition in words Arbitrary time of component B in system 1 compared with arbitrary time of component B in a reference system. Note 1: Component B can be a reaction...

Celsius temperature (temp.)

Celsius temperature (temp.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Temp. Definition in words Thermodynamic temperature minus 273.15 K Note: Thermodynamic temperature (Kelvin temperature, absolute temperature) is a base SI quantity Definition...

Arbitrary length (arb.length)

Arbitrary length (arb.length) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Arb.length Definition in words Arbitrary length of component B in system 1 Definition by equation Note: kprocedure is a constant defined by the measurement procedure (there...

Half-life

Half-life OverviewExamplesConcept relationsshipHistoryDetails Synonyms Half-time (T½) Definition in words Time take for the amount (e.g. number, volume, mass, amount-of-substance) to reach the arithmetic mean of its initial and final equilibrium value, assuming a...

Area

Area OverviewExamplesConcept relationsshipHistoryDetails Synonym Area of plane, surface or interface Definition in words Integral product of length, x, and breadth (width), y, of component B in system 1 Definition by equation Systematic terms Area of component B in...

Height

Height OverviewExamplesConcept relationsshipHistoryDetails Definition in words Length of component B in system 1 Note: Length on z-axis in Cartsian coordinate system Definition by equation Systematic terms Height of component B in system 1 Result type Rational scale...

Compatibility

Compatibility OverviewExamplesConcept relationsshipHistoryDetails Definition in words Tolerance toward non-self entities Note: “Tolerance” is the ability not to initiate a reaction Systematic terms Compatibility of component B in system 1 Result type...

Areic mass

Areic mass OverviewExamplesConcept relationsshipHistoryDetails Definition in words Mass of component B divided by area of system 1 Definition by equation Systematic terms Areic mass of component B in system 1 Result type Rational scale Value sets are positive...

Areic mass rate

Areic mass rate OverviewExamplesConcept relationsshipHistoryDetails Definition in words Change of mass of component B divided by the elapsed time and the area of system 1 Definition by equation Systematic terms Areic mass rate of component B in system 1 Result type...

Areic number

Areic number OverviewExamplesConcept relationsshipHistoryDetails Definition in words Number of component B divided by area of system 1 Definition by equation Systematic terms Areic number of component B in system 1 Result type Rational scale Value sets are positive...

Length

Length OverviewExamplesConcept relationsshipHistoryDetails Definition in words Distance between two points 1 and 2 of component B in system 1 Note: Length is a SI base kind-of-quantity Definition by equation Systematic terms Length of component B in system 1 Result...

Life span

Life span OverviewExamplesConcept relationsshipHistoryDetails Synonym Time, duration, time elapsed, age, life expectancy, time difference Definition in words A specific moment of time minus another specific moment of time Note 1: Time is a SI base kind-of-quantity...

Mass

Mass OverviewExamplesConcept relationsshipHistoryDetails Definition in words The coefficient of proportionality between the force applied to a body and its acceleration Note: Mass is a base SI quantity Definition by equation Systematic terms Mass of component B in...

Mass coefficient

Mass coefficient OverviewExamplesConcept relationsshipHistoryDetails Definition in words Mass of component B divided by coefficient of component B in system 1 Mass of component F divided by coefficient of component G in system 1 Note 1: Coefficient can be a...

Mass concentration (mass c.)

Mass concentration (mass c.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Mass c. Definition in words The mass of component B divided by volume of system 1 Definition by equation Systematic terms Mass concentration of component B in system 1 Result...

Mass fraction (mass fr.)

Mass fraction (mass fr.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Mass fr. Definition in words The mass of component B divided by the mass of system 1 Definition by equation Systematic terms Mass fraction of component B in system 1 Result type...

Mass rate

Mass rate OverviewExamplesConcept relationsshipHistoryDetails Synonyms Mean mass rate, mass flow rate, mass velocity Abbreviation Mass c. Definition in words Change of mass of component B divided by time elapsed in system 1 Definition by equation Systematic terms Mass...

Mass rate ratio

Mass rate ratio OverviewExamplesConcept relationsshipHistoryDetails Definition in words The mass rate of component F divided by mass rate of component G in system 1 Note 1: Component F ≠ Component G (≠ = “not equal to”) Note 2: Component F ∉ Component G...

Mass ratio

Mass ratio OverviewExamplesConcept relationsshipHistoryDetails Definition in words The mass of component F divided by mass of component G in system 1 Note 1: Component F ≠ Component G (≠ = “not equal to”) Note 2: Component F ∉ Component G (∉ = “is...

Molality (molal.)

Molality (molal.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Molal. Definition in words Amount-of-substance of component B (solute) divided by mass of system 1 (solvent) Note: Molality differs from substance content that refers to mass of a...

Motility

Motility OverviewExamplesConcept relationsshipHistoryDetails Definition in words Ability of an organism to move independently compared to the movement ability of a reference organism Systematic terms Motility of component B in system 1 Result type Ordinal scale Value...

Number content (num.cont.)

Number content (num.cont.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Num.cont. Definition in words The number of component B divided by mass of system 1 Definition by equation Systematic terms Number content of component B in system 1 Result...

Number fraction (num.fr.)

Number fraction (num.fr.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Num.fr. Definition in words The number of component B divided by number of system 1 Definition by equation Systematic terms Number fraction of component B in system 1 Result...

Number of doses

Number of doses OverviewExamplesConcept relationsshipHistoryDetails Definition in words Number of doses of component B in system 1 Note 1: Doses are kinds-of-quantity, e.g. amount-of-substance, mass, etc. Definition by equation Systematic terms Number of doses of...

Number of entities (num.)

Number of entities (num.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Absolute frequency, number of particles, number of molecules Abbreviation Num. Definition in words Number of entities (component B) in system 1 Note 1: Number of entities is not a SI...

Number ratio (num.ratio)

Number ratio (num.ratio) OverviewExamplesConcept relationsshipHistoryDetails Synonym Chemical amount Abbreviation Num.ratio Definition in words Number of component F divided by number of component G in system 1 Note 1: Component B is the quotient of component F and...

Partial pressure (part.pr.)

Partial pressure (part.pr.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Vapour pressure Abbreviation Part.pr. Definition in words Substance fraction of component B times pressure of gaseous system 1 Definition by equation Systematic terms Partial...

Pattern of crystallization

Pattern of crystallization OverviewExamplesConcept relationsshipHistoryDetails Definition in words Structure of component B after formation of crystals compared to structure of a reference system after formation of crystals Systematic terms Pattern of crystallization...

pH

pH OverviewExamplesConcept relationsshipHistoryDetails Synonym Hydrogen ion exponent Abbreviation pH Definition in words Negative decadic logarithm of the relative molal activity of hydrogen ion Definition by equation Systematic terms pH of hydrogen ion in system 1...

Presence

Presence OverviewExamplesConcept relationsshipHistoryDetails Definition in words Something that is existing or occuring Systematic terms Presence of component B in system 1 Result type Ordinal scale Value set is ranked accoding to magnitude The value set and the limit...

Pressure (pr.)

Pressure (pr.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Absolute pressure, total pressure (of gas mixture), volumic hydraulic energy, areic force Abbreviation Pr. Definition in words Force, as a scalar quantity, exerted by a fluid normal to a plane...

Radioactivity (radioact.)

Radioactivity (radioact.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Radioact. Definition in words Number of nuclear decays occurring in a given quantity of material in a small time interval, divided by the duration of that time interval (ref 3)...

Relative distribution width

Relative distribution width OverviewExamplesConcept relationsshipHistoryDetails Definition in words Distribution width of component B in system 1 divided by distribution width of component B in system 2 Note: System 1 is not related to system 2 Definition by equation...

Relative time (rel.time)

Relative time (rel.time) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Rel.time Definition in words Time of component B in system 1 divided by time of component B in system 2 Note: System 1 is not related to system 2 Definition by equation...

Saturation (sat.)

Saturation (sat.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Saturation fraction Abbreviation Sat. Definition in words Amount-of-substance of component B (solute) in a solution divided by the amount-of-substance of the component when it is saturating...

Substance rate (subst.rate)

Substance rate (subst.rate) OverviewExamplesConcept relationsshipHistoryDetails Synonyms Substance flow rate Abbreviation Subst.rate Definition in words Change of amount-of-substance of component B divided by the time elapsed Definition by equation Systematic terms...

Susceptibility (suscept.)

Susceptibility (suscept.) OverviewExamplesConcept relationsshipHistoryDetails Definition in words A lower threshold kind-of-quantity value of component B compared with a threshold kind-of-quantity value of component B in a reference system Note 1: Component B can be...

Time

Time OverviewExamplesConcept relationsshipHistoryDetails Synonym Duration, time elapsed, age, life expectancy, time difference Definition in words A specific moment of time minus another specific moment of time Note 1: Time is a SI base kind-of-quantity Note...

Time interval (time int.)

Time interval (time int.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Time, duration, time elapsed, age, life expectancy, time difference Abbreviation Time int. Definition in words A specific moment of time minus another specific moment of time Note...

Velocity (vel.)

Velocity (vel.) OverviewExamplesConcept relationsshipHistoryDetails Synonym Length rate vector Abbreviation Vel. Definition in words Change in position divided by time of travel Definition by equation Note: Position at the x-, y- and z-axis Result type Rational scale...

Volume (vol.)

Volume (vol.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Vol. Definition in words Integral product of length, x, breadth, y and height, z Definition by equation Result type Rational scale Value sets are positive numerical values (a=nb; a≠nb)...

Volume fraction (vol.fr.)

Volume fraction (vol.fr.) OverviewExamplesConcept relationsshipHistoryDetails Abbreviation Vol.fr. Definition in words The volume of component B divided by the volume of system 1 Definition by equation Result type Rational scale Value sets are positive numerical...

Volume rate (vol.rate)

Volume rate (vol.rate) OverviewExamplesConcept relationsshipHistoryDetails Synonym Volume flow rate, mean volume rate, volume rate of flow Abbreviation Vol.rate Definition in words Change of volume of component B divided by the difference of time in system 1...

Volumic energy

Volumic energy OverviewExamplesConcept relationsshipHistoryDetails Synonym Energy density Definition in words Mean energy in a system 1 divided by the volume of system 1 Definition by equation Note: Energy is E=mc2 Systematic terms Volumic energy of component B in...