DS DS/EN ISO 787-16
DS DSEN SO 787-16 1995-SEP-06 General methods of test for pgments and extenders - Part 16 Determnaton of relatve tntng strength or equvalent colourng value and colour on reducton of coloured pgments - Vsual comparson method
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This part of EN ISO 787 describes a general method of test for comparing the tinting strength and colour on reduction of two similar coloured pigments the result being expressed either as "relative tinting strength" or as "equivalent colouring value".