Home / Standards / GB/T 25915.8-2021 GB/T 25915.8-2021 Active Cleanrooms and associated controlled environments—Part 8: Classification of air cleanliness by chemical concentration (ACC) 洁净室及相关受控环境 第8部分:按化学物浓度划分空气洁净度(ACC)等级 Standard Type GBT ICS 13.040.35 CCS C70 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 国家标准委 Drafting Unit N/A