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YS/T 63.23-2012 Carbonaceous materials used in the production of aluminiumPart 23:Baked anodes —Determination of the reactivity to air—Thermogravimetric method 180 (USD) via email in 1-3 business day VALID
YS/T 248.6-1994 Methods for chemical analysis of crude lead The oscillopolarographic method for the determination of copper content 30 (USD) via email in 1-3 business day ABOLISHED
YS/T 273.3-1994 75 (USD) via email in 1-3 business day ABOLISHED
YS/T 990.2-2014 Methods for chemical analysis of copper matte—Part 2:Determination of gold and silver contents—Atomic absorption spectrmetry and fire assay method 180 (USD) via email in 1-3 business day VALID
YS/T 964-2014 Determinator for the reactivity to air of carbon block used in the production of aluminium 240 (USD) via email in 1-3 business day VALID
YS/T 616-2006 Ceramic-medium filter via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 520.8-2006 Methods for chemical analysis of gallium The ethyl violet photometric method for the determination of indium content 45 (USD) via email in 1-3 business day ABOLISHED
YS/T 715.1-2009 Methods for chemical analysis of selenium dioxide Part 1:Determination of selenium dioxide content—Sodium thiosulfate titration 120 (USD) via email in 1-3 business day VALID
YS/T 106-1992 via email in VALID please email coc@codeofchina.com for quotation
YS/T 554-2007 Lithium niobate single crystals 240 (USD) via email in 1-3 business day VALID
YS/T 257-1998 Indium 90 (USD) via email in 1-3 business day ABOLISHED
YS/T 385-1994 75 (USD) via email in 1-3 business day ABOLISHED
YS/T 667.3-2009 The testing methods for chemical alumina—Part 3—Determining concentration of cadmium,chromium and vanadium in 4A zeolite by ICP-AES 120 (USD) via email in 1-3 business day VALID
YS/T 441.1-2014 Management rules of nonferrous metals balance—Part 1:Copper enrichment and metallurgy 300 (USD) via email in 1-3 business day VALID
YS/T 569.8-2015 Methods for chemical analysis of thallium—Part 8:Determination of indium content—Crystal violet benzene extraction spectrophotometry 120 (USD) via email in 1-3 business day VALID
YS/T 1154-2016 Crude Selenium 105 (USD) via email in 1 business day VALID
YS/T 119-2-1992 Methods for determination and calculation of heat balance of special equipments for alumina production (Rotary kiln used calcining) via email in VALID please email coc@codeofchina.com for quotation
YS/T 539.1-2006 Nickel base alloy powder -- Determination of boron content -- Alkalimetric method 45 (USD) via email in 1-3 business day ABOLISHED
YS/T 273.4-1994 45 (USD) via email in 1-3 business day ABOLISHED
YS/T 618-2007 Test methods for oil absorption of aluminium hydroxide for filler via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
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