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YS/T 240.7-1994 Chemical analysis of bismuth concentrate The barium sulfate gravimetric method for determination of sulfur 30 (USD) via email in 1-3 business day ABOLISHED
YS/T 240.5-1994 C 30 (USD) via email in 1-3 business day ABOLISHED
GB/T 1824-1979 Determination of arsenic content in tin concentrates via email in ABOLISHED please email coc@codeofchina.com for quotation
YS/T 240.4-1994 C 45 (USD) via email in 1-3 business day ABOLISHED
GB/T 1819.16-2017 Methods for chemical analysis of tin concentrats—Part 16:Determination of siliver content—Flame atomic absorption spectrometry 120 (USD) via email in 1-3 business day VALID
GB 3884.1-1983 45 (USD) via email in 1-3 business day ABOLISHED
GB/T 1832-1979 Determination of magnesium oxide content in tin concentrates--Xylidyl blue Ⅱ photometric method via email in ABOLISHED please email coc@codeofchina.com for quotation
YS/T 240.10-1994 Chemical analysis of bismuth concentrate The chromazurol S photometric method for determination of aluminium oxide 45 (USD) via email in 1-3 business day ABOLISHED
YS 5029-1995 via email in VALID please email coc@codeofchina.com for quotation
GB/T 1819.1-2004 Methods for chemical analysis of tin concentrates—Determination of water content—The weighing method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 8152.4-2006 Methods for chemical analysis of lead concentrates―Determination of zinc content―EDTA titration method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB 3258.1-1982 30 (USD) via email in 1-3 business day ABOLISHED
GB/T 8152.1-1987 Methods for chemical analysis of lead concentrates; The Na2 EDTA volumetric method for the determination of lead content 75 (USD) via email in 1-3 business day ABOLISHED
YS/T 452-2002 Lead & zine bulk concentrate via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YB/T 159.6-1999 Methods for chemical analysis of titanium concentrate(rock minerals)—The EGTA-CyDTA volumetric method for the determination of calcium oxide and magnesium oxide content 75 (USD) via email in 1-3 business day ABOLISHED
GB 3258.6-1982 45 (USD) via email in 1-3 business day ABOLISHED
GB 3258.4-1982 45 (USD) via email in 1-3 business day ABOLISHED
GB/T 8152.1-2006 Methods for chemical analysis of lead concentrates―Determination of lead content―EDTA titration method after acid digestion via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 1819.10-2017 Methods for chemical analysis of tin concentrates—Part 10:Determination of sulfur content—High frequency combustion with infrared absorption method and potassium iodate titrimetric method 180 (USD) via email in 1-3 business day VALID
YB/T 159.6-2015 Titanium concentrate(rock minerals). Determination of calciumoxide and magnesium oxide content. The EGTA-CyDTA titrimetric method via email in VALID please email coc@codeofchina.com for quotation
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