GB/T 2007.4-2008
China national
standard english version:
GB
中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 2007.4-2008
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
Issued Date:2008-08-20
Implemented Date:2009-04-01
Issued by:
The Standardization Administration of the People's Republic of China