Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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YS/T 645-2007 Method for analysis of gold compounds determination of gold content potentiometric titration using ferrous sulfate 60.0 via email in 1~3 business day to be abolished
YS/T 445-2001 Methods for Chemical Analysis of Silver Concentrates 210.0 via email in 1~3 business day valid
GB/T 25934.3-2010 Methods for chemical analysis of high - purity gold - Part 3: Ethylether extraction separation - Inductively coupled plasma-atomic emission spectrometry - Determinaion of impurity e 180.0 via email in 1~3 business day valid
YS/T 374.3-1994 15.0 via email in 1~3 business day abolished
GB/T 15072.13-1994 Silver alloys-Determination of cerium content 15.0 via email in 1~3 business day abolished
YS/T 372.18-2006 Method for elementary analysis of precious alloy - Determination of gadolinium content - Chlorophosphonazo Ⅲ spectrophotometry 60.0 via email in 1~3 business day valid
GB/T 11067.1-2006 Methods for chemical analysis of silver - Determination of silver content - Silver chloride precipitation-Flame atomic absorption spectrometric method 90.0 via email in 1~3 business day valid
GB/T 15072.3-1994 Gold,platinum and palladium alloys-Determination of platinum content 60.0 via email in 1~3 business day abolished
GB/T 15072.18-1994 Gold alloys-Determination of iron content 30.0 via email in 1~3 business day abolished
YS/T 562-2006 Method for chemical analysis of platinum-ruthenium alloys 15.0 via email in 1~3 business day abolished
YS/T 374.7-1994 15.0 via email in 1~3 business day abolished
GB/T 15249.1-1994 Crude Gold-Determination of gold content-Fire assay gravimetric method 45.0 via email in 1~3 business day abolished
YS/T 371-2006 Methods for chemical analysis of precious metals alloys - General rules and regulations 105.0 via email in 1~3 business day valid
YS/T 372.15-2006 Methods for elementary analysis of precious alloy - Determination of antimony content - The flame atomic absorption spectrometric method 60.0 via email in 1~3 business day valid
GB/T 15249.2-1994 Crude Gold-Determination of silver content-EDTA titrimetric method 30.0 via email in 1~3 business day abolished
YS/T 563-2006 Method for chemical analysis of platinum-palladium-rhodium alloys 15.0 via email in 1~3 business day abolished
YS/T 646-2007 Method for chemical analysis of platinum compounds determination of platinum content electricity titration using potassium permanganate 90.0 via email in 1~3 business day to be abolished
GB/T 15249.2-2009 Methods for chemical analysis of crude gold - Part 2: Determination of silver content - Fire assay gravimetric and EDTA titrimetric methods 150.0 via email in 1~3 business day valid
GB/T 11066.9-2009 Methods for chemical analysis of gold—Determination of arsenic and tin contents—Hydride generation-atomic fluorescence spectrometry 150.0 via email in 1~3 business day valid
GB/T 15072.16-1994 Gold alloys-Determination of copper and manganese contents 45.0 via email in 1~3 business day abolished
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