Home / Standards / GB/T 1873-1995 GB/T 1873-1995 Active Phosphate rock and concentrate--Determination of silicon dixide content--Gravimetric and volumetric methods 磷矿石和磷精矿中二氧化硅含量的测定 重量法和容量法 Standard Type GBT ICS 73.080 CCS D51 Status 现行 Issue Date 1995-12-21 Implementation 1996-08-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A