DANSK DS/EN 62321-7-1:2016 电工产品中某些物质的测定 第7-1部分:通过比色法测定金属上无色和有色防腐蚀涂层中六价铬 (Cr(VI)) 的存在
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