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Projects of CEN/TC 289

DIN EN ISO 17234-1 2023-07-17 Leather - Chemical tests for the determination of certain azo colourants in dyed leathers - Part 1: Determination of certain aromatic amines derived from azo colourants (ISO/DIS 17234-1:2023); German and English version prEN ISO 17234-1:2023 More  Comment 

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