1brucehsu 发表于 2016-6-21 11:34:31

ISO 17075-1 Leather -- Chemical determination of chromium(VI)

求ISO 17075-1Leather -- Chemical determination of chromium(VI) content in leather -- Part 1: Colorimetric method
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梦游季节 发表于 2016-6-21 14:39:40

有一个DIN EN ISO 的
http://bbs.cnfzjc.com/thread-22877-1-1.html

梦回普罗旺斯 发表于 2017-4-17 15:59:38

http://bbs.cnfzjc.com/forum.php?mod=viewthread&tid=23739&extra=page%3D1&_dsign=daa469d6
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