DIN EN 62321-7-2-2017 电工技术产品中某些物质的测定.第7-2部分:六价铬.采用比色法测定电子聚合物中的六价铬(Cr(VI))(IEC 62321-7-2-2017);德文版本EN 62321-7-2-2017
Determination of certain substances in electrotechnical products - Part 7-2: Hexavalent chromium - Determination of hexavalent chromium (Cr(VI)) in polymers and electronics by the colorimetric method (IEC 62321-7-2:2017); German version EN 62321-7-2:2017