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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/FDIS 17234-1:2024); German version FprEN ISO 17234-1:2024 More  Comment 

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