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YS/T 938.3-2013 Chemical analysis methods of gold alloys and palladium alloys for dental ceramic restoration―Part 3:Determination of silver content―Flame atomic absoption spectrometry and potentiometric titration 165.0 via email in 1~3 business day valid
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 valid
YS/T 445-2001 Methods for Chemical Analysis of Silver Concentrates 210.0 via email in 1~3 business day valid
GB/T 15249.3-1994 Crude Gold-Determination of copper content-Iodometric method 30.0 via email in 1~3 business day superseded
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
GB/T 11067.1-1989 Silver-Determination of silver content-Silver chloride precopitation-Flame atomic absorption spectrometric method 45.0 via email in 1~3 business day superseded
GB/T 18307-2001 Methods for chemical analysis of crude silver 120.0 via email in 1~3 business day valid
GB/T 11067.7-1989 Silver-Determination of copper, bismuth, iron, lead, gold and antimony contents-Emission spectrometric method 30.0 via email in 1~3 business day superseded
YS/T 372.7-1994 15.0 via email in 1~3 business day superseded
YS/T 374.3-1994 15.0 via email in 1~3 business day superseded
GB/T 15072.5-1994 Gold,Palladium alloys-Determination of silver content 45.0 via email in 1~3 business day superseded
YS/T 372.8-2006 Methods for elementary analysis of precious alloy - Determination of cobalt content in PtCo alloy - EDTA complex metric titration 60.0 via email in 1~3 business day valid
GB/T 15072.13-1994 Silver alloys-Determination of cerium content 15.0 via email in 1~3 business day superseded
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 17473.1-1998 Test methods of precious metal pastes used for thick film microelectronics--Determination of solids content 60.0 via email in 1~3 business day abolished
GB/T 15072.10-1994 Gold alloys-Determination of nickel content 30.0 via email in 1~3 business day superseded
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 11066.6-2009 Methods for chemical analysis of gold—Determination of magnesium、nickel、manganese、palladium contents—Flame atomic absorption spectrometry 120.0 via email in 1~3 business day valid
GB/T 11066.7-2009 Methods for chemical analysis of gold - Determination of silver copper iron lead antimony bismuth palladium magnesium tin nickel manganese and chromium contents - Spark atomic emission spectrometry 180.0 via email in 1~3 business day valid
YS/T 372.14-2006 Methods for elementary analysis of precious alloy -- Determination of magnesium content -- Potentiometer titration using potassium permanganate 60.0 via email in 1~3 business day valid
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