Home / Standards / GB/T 602-2026 GB/T 602-2026 Upcoming Chemical reagent—Preparations of standard solutions for impurity 化学试剂 杂质测定用标准溶液的制备 Standard Type GBT ICS 71.040.30;71.040.40 CCS G60 Status 即将实施 Issue Date 2026-02-27 Implementation 2026-09-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A