transition interval

in titrimetric analysis
https://doi.org/10.1351/goldbook.T06457
The range of concentration over which the eye is able to perceive change in hue, colour intensity, @F02453@ or other property of a visual indicator arising from the varying ratio of the two relevant forms of the indicator.
Source:
Orange Book, 2nd ed., p. 48 [Terms] [Book]
Citation: 'transition interval' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.T06457 RIS BibTex EndNote
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Last revised: February 24, 2014