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
State system for ensuring the uniformity of measurements. State special standard and all-union verification schedule for means of measuring the angular velocity in the range of 5x10 in minus 8 degree up to 2,5x10 in minus 4 degree rad/s