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General methods of test for pigments and extenders - Photometric methods for determining the relative tinting strength of coloured pigments and the relative scattering power of white pigments

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1 Scope

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

  1. the tinting strength of two similar coloured pigments dispersed in an alkyd resin without a drier;

  2. 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.