Leather - Chemical determination of chromium(VI) content in leather - Part 1: Colorimetric method (ISO 17075-1:2017); German version EN ISO 17075-1:2017— 17 стр.
Leather - Chemical determination of chromium(VI) content in leather - Part 1: Colorimetric method (ISO/DIS 17075-1:2015); German and English version prEN ISO 17075-1:2015