NF T31-228*NF EN ISO 787-24:1995 General methods of test for pigments and extenders. Part 24 : determination of relative tinting strength of coloured pigments and relative scattering power of white pigments. Photometric methods.
1995NF T31-228*NF EN ISO 787-24:1995 General methods of test for pigments and extenders. Part 24 : determination of relative tinting strength of coloured pigments and relative scattering power of white pigments. Photometric methods.