Low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Electrical safety. Equipment for testing, measuring or monitoring of protective measures. Part 6. Residual current operated protective devices in TT, TN and IT systems
Textiles. Methods for determination of certain aromatic amines from azo colorants. Part 1. Detection of the use of certain azo colorants accessible with and without extracting the fibres
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