Saturation (sat.) - Dynamic NPU Manual

Saturation (sat.)


Saturation fraction



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 the system at constant temperature and pressure

Definition by equation

Systematic terms

Saturation of component B in system 1

Result type

Rational scale
  • Value sets are positive numerical values
  • Algebraic operations are allowed (a=nb; a≠nb)
Numerical values from 0-∞


10-18, 10-15, 10-12, 10-9, 10-6, 10-3, 1 (one), etc.

Unit, one (1) is omitted in the NPU syntax


  • Lehmann HP, Fuentes-Arderiu X, Bertello L. Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996). Pure and Applied Chemistry. 2009;68(4):957-1000. doi:10.1351/pac199668040957.
  • Ferard G, Dybkaer R, Fuentes-Arderiu X. Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences : Recommendations 2016. 1 ed: Royal Society of Chemistry; 2016. 182 p. doi:10.1039/9781782622451.

Laboratory field



Generic abbreviated
NPU03011 Hb(Fe; O2-bind.; aB)—Oxygen(O2); sat. = ?
Full result NPU03011 Haemoglobin(Fe; O2-binding; arterial blood)—Oxygen(O2); saturation = 0.88 x one
Abbreviated result NPU03011 Hb(Fe; O2-bind.; aB)—Oxygen(O2); sat. = 0.88
Written expression The saturation of Oxygen(O2) of all Haemoglobin(Fe; O2-binding) in Mr. Smith’s arterial blood is [0.88].


  • Kind-of-property

    • Nominal kind-of-property

    • Kind-of-quantity

      • Unitary kind-of-quantity

        • Rational unitary kind-of-quantity

          • Saturation


  • Dybkaer R. Concept system on ‘quantity’: formation and terminology. Accredit Qual Assur. 2013;18(3):253-60.
  • Dybkaer R. ISO terminological analysis of the VIM3 concepts ‘quantity’ and ‘kind-of-quantity’. Metrologia. 2010;47(3):127-34.
Date Term Note
1996-01-01 Saturation Term established