Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 18114.8-2000 Methods for chemical analysis of monazite concentrates-Determination of yttrium oxide content 30.0 via email in 1~3 business day superseded
GB/T 7739.10-2007 Methods for chemical analysis of gold concentrates—Part 10:Determination of antimony contents 120.0 via email in 1~3 business day valid
YS/T 254.6-1994 Methods for chemical analysis of beryllium concentrates-beryl The atomic absorption spectrophotometric method for the determination of calcium oxide content 60.0 via email in 1~3 business day abolished
GB/T 18114.1-2000 Methods for chemical analysis of monazite concentrates-Determination of total rare earth and thorium oxide content 15.0 via email in 1~3 business day superseded
YS/T 3006-2011 Calculation methods of gold recovery rate of cyanide leaching and zinc dust precipitation 120.0 via email in 1~3 business day valid
YS/T 318-1997 Copper concentrate 45.0 via email in 1~3 business day superseded
YS/T 231-2015 Tungsten concentrate 105.0 via email in 1~3 business day valid
YS/T 231-2007 Tungsten concentrate 90.0 via email in 1~3 business day superseded
GB/T 20899.7-2007 Methods for chemical analysis of gold ores—Part 7:Determination of iron contents 90.0 via email in 1~3 business day valid
YS/T 300-2015 Germanium concentrates 165.0 via email in 1~3 business day valid
YS/T 254.2-1994 Methods for chemical analysis of beryllium concentrates-beryl The EDTA volumetric method for the determination of ferric sesquioxide content 30.0 via email in 1~3 business day abolished
GB/T 20899.1-2007 Methods for chemical analysis of gold ores—Part 1:Determination of gold contents 180.0 via email in 1~3 business day valid
GB/T 20899.4-2007 Methods for chemical analysis of gold ores—Part 4:Determination of copper cotents 120.0 via email in 1~3 business day valid
YS/T 298-2007 High titanium slag 105.0 via email in 1~3 business day superseded
GB/T 7739.9-2007 Methods for chemical analysis of gold concentrates—Part 9:Determination of carbon contents 120.0 via email in 1~3 business day valid
YS/T 339-2002 Tin concentrate 60.0 via email in 1~3 business day superseded
GB/T 20899.11-2007 Methods for chemical analysis of gold ores—Part 11:Determination of arsenic and bismuth contents 90.0 via email in 1~3 business day valid
GB/T 18114.2-2000 Methods for chemical analysis of monazite concentrates-Determination of thorium oxide content 15.0 via email in 1~3 business day superseded
GB/T 20899.9-2007 Methods for chemical analysis of gold ores—Part 9:Determination of carbon cotents 90.0 via email in 1~3 business day valid
YS/T 254.1-1994 Methods for chemical analysis of beryllium concentrates-beryl The phosphate gravimetric method for the determination of beryllium oxide content 30.0 via email in 1~3 business day superseded
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