Home / Standards / GB/T 39719-2020 GB/T 39719-2020 Active Field and concentrated natural rubber latices—Determination of magnesium content—Cyanide-free titrimetric method 新鲜和浓缩天然胶乳 镁含量的测定 滴定法(无氰法) Standard Type GBT ICS 83.040.10 CCS B72 Status 现行 Issue Date 2020-12-14 Implementation 2021-07-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A