Home / Standards / GB/T 39990-2021 GB/T 39990-2021 Active Particulate─Bioaerosol sampler─Technical specification 颗粒 生物气溶胶采样器 技术条件 Standard Type GBT ICS 19.120 CCS A28 Status 现行 Issue Date 2021-04-30 Implementation 2021-08-01 Responsible Dept 国家标准委 Drafting Unit N/A