Home / Standards / GB/T 21796-2022 GB/T 21796-2022 Active Chemicals—Activated sludge respiration inhibition test 化学品 活性污泥呼吸抑制试验 Standard Type GBT ICS 13.300 CCS A80 Status 现行 Issue Date 2022-07-11 Implementation 2023-02-01 Responsible Dept 国家标准委 Drafting Unit N/A