Home / Standards / GB/T 4702.7-2016 GB/T 4702.7-2016 Active Chromium metal─Determination of nitrogen content─Distillation-nessler reagent spectrophotometric method 金属铬 氮含量的测定 蒸馏分离-奈斯勒试剂分光光度法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2016-08-29 Implementation 2017-07-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A