Home / Standards / GB/T 2007.4-2008 GB/T 2007.4-2008 Active General rules for the sampling and sample preparation of minerals in bulk - Experimental methods for checking the precision and bias 散装矿产品取样、制样通则 偏差、精密度校核试验方法 Standard Type GBT ICS 73.020 CCS D01 Status 现行 Issue Date 2008-08-20 Implementation 2009-04-01 Responsible Dept 市场监管总局 Drafting Unit N/A