Logarithmic scale - Dynamic NPU Manual

Logarithmic scale

Synonym Log scale

A value set that contains numerical values that are exponents or power (x) to base 10



A non-linear scale that contains a wide range of numerical values

Value set

Numerical values between negative infinity and positive infinity (-∞ – ∞)

Note: The low and high limits of reportable result ranges are defined for each measurand

Example of values


Mathematical operations


  1. 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.
  • arbitrary logarithmic number concentration
  • pH