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YS/T 374.3-1994 (USD) via email in 1-3 business day ABOLISHED
GB/T 38783-2020 Method of coating thickness determination for precious metal composites by scanning electron microscope (USD) via email in 1-3 business day TO BE VALID
YS/T 373.2-1994 (USD) via email in 1-3 business day ABOLISHED
GB/T 15072.7-1994 Gold alloys-Determination of chromium content (USD) via email in 1-3 business day ABOLISHED
YS/T 373.8-1994 (USD) via email in 1-3 business day ABOLISHED
YS/T 645-2007 Method for analysis of gold compounds determination of gold content potentiometric titration using ferrous sulfate via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 11067.5-2006 Methods for chemical analysis of silver - Determination of lead and bismuth contents - Flame atomic absorption spectrometric method (USD) via email in 1-3 business day VALID
YS/T 364-1994 (USD) via email in 1-3 business day ABOLISHED
GB/T 15249.5-2009 Methods for chemical analysis of crude gold - Part 5: Determination of mercury content - Cold atomic absorption spectrometry (USD) via email in 1-3 business day VALID
YB/T 118-1970 via email in ABOLISHED please email coc@codeofchina.com for quotation
GB/T 11066.10-2009 Methods for chemical analysis of gold—Determination of silicon content—Molybdenum blue spectrophotometry (USD) via email in 1-3 business day VALID
GB/T 15072.9-1994 Gold alloys-Determination of indium content (USD) via email in 1-3 business day ABOLISHED
YS/T 372.8-1994 (USD) via email in 1-3 business day ABOLISHED
YS/T 372.13-2006 Methods for elementary analysis of precious alloy -- Determination of tin content -- EDTA complex metric titration via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 15072.11-1994 Gold alloys-Determination of gadolinium content (USD) via email in 1-3 business day ABOLISHED
YS/T 364-2006 Determination of trace impurities in purity iridium by atomic emission spectrometric via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 646-2007 Method for chemical analysis of platinum compounds determination of platinum content electricity titration using potassium permanganate via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 11067.4-1989 Silver-Determination of antimony content-2-(5-bromo -2-pyridylazo)-5-diethylaminophenol spectrophotometricmethod (USD) via email in 1-3 business day ABOLISHED
YS/T 372.4-2006 Methods for elementary analysis of precious alloy—Determination of copper content—Complexometric titration using thiourea releasing EDTA via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 372.6-2006 Methods for elementary analysis of precious alloys—Determination of copper and manganese contents—The flame atomic absorption spectrometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
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