General methods of test for pigments and extenders - Part 9: Determination of pH value of an aqueous suspension (ISO 787-9:1981); German version EN ISO 787-9:1995— 4 стр.
General methods of test for pigments and extenders; determination of relative tinting strength of coloured pigments and relative scattering power of white pigments; photometric methods; identical with ISO 787/24, edition 1985— 11 стр.
General methods of test for pigments and extenders - Part 9: Determination of pH value of an aqueous suspension (ISO 787-9:1981); German version EN ISO 787-9:1995— 4 стр.