Home / Standards / GB/T 21524-2008 GB/T 21524-2008 Active Particle size determination of inorganic chemical products - Sieving method 无机化工产品中粒度的测定 筛分法 Standard Type GBT ICS 71.060.01 CCS G10 Status 现行 Issue Date 2008-04-01 Implementation 2008-09-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A