ISO 787-24:2026

General methods of test for pigments and extenders — Part 24: Photometric methods for determining the relative tinting strength of coloured pigments and the relative scattering power of white pigments

This document specifies photometric methods of test for comparing in the visible spectrum:

the tinting strength of two similar coloured pigments dispersed in an alkyd resin without a drier;
the scattering power of two white pigments of the same type dispersed in an alkyd resin without a drier.

This document does not apply to the comparison of coloured pigments that on reduction differ greatly in colour.