DIN EN ISO 5398-2:2009 皮革.氧化铬含量的化学法测定.第2部分:通过比色测定法进行定量(ISO 5398-2:2009),DIN EN ISO 5398-2:2009-06的英文版本
Leather - Chemical determination of chromic oxide content - Part 2: Quantification by colorimetric determination (ISO 5398-2:2009); English version of DIN EN ISO 5398-2:2009-06