Home / Standards / GB/T 31197-2026 GB/T 31197-2026 Upcoming Inorganic chemicals for industrial use—Determination of impurity ions—Ion chromatography method 无机化工产品 杂质离子的测定 离子色谱法 Standard Type GBT ICS 71.060.01 CCS G 10 Status 即将实施 Issue Date 2026-03-31 Implementation 2026-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A