Home / Standards / GB/T 47074-2026 GB/T 47074-2026 Upcoming Particle─Test method for collection efficiency of aerosol sampling filter 颗粒 气溶胶采样滤膜截留效率测试方法 Standard Type GBT ICS 19.120 CCS A28 Status 即将实施 Issue Date 2026-01-28 Implementation 2026-08-01 Responsible Dept 国家标准委 Drafting Unit N/A