DIN EN 62321-7-1-2016 电工技术产品中某些物质的测定.第7-1部分:六价铬.使用比色法确定金属无色和有色防腐蚀涂层中是否存在六价铬 (Cr(VI))(IEC 62321-7-1-2015).德文版本EN 62321-7-1-2015
Determination of certain substances in electrotechnical products - Part 7-1: Determination of the presence of hexavalent chromium (Cr(VI)) in colorless and colored corrosion-protected coatings on metals by the colorimetric method (IEC 62321-7-1:2015); Ger