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GB/T 13747.20-1992 Zirconium and zirconium alloys-Determination of hafnium content-Emission spectrographic method (USD) via email in 1-3 business day ABOLISHED
GB/T 13747.2-1992 Zirconium and zirconium alloys-Determination of iron content-1,10-phenanthroline spectrophotometric method (USD) via email in 1-3 business day VALID
YS/T 536.2-2006 Methods for chemical analysis of bismuth -- Determination of iron content -- 1 10-phenanthroline photometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 3418-1982 Electrolytic manganese metal via email in ABOLISHED please email coc@codeofchina.com for quotation
YS/T 569.8-2006 Thallium--Determination of indium content--Crystal violet extraction photometric method (USD) via email in 1-3 business day ABOLISHED
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
YB/T 5314-2006 Methods for chemical analysis of calcium-silicon--The EDTA titrimetric method for the determination of aluminum content (USD) via email in 1-3 business day ABOLISHED
GB/T 4700.1-1984 Methods for chemical analysis of calcium-silicon;The perchloric acid dehydration-gravimetric method for the determination of silicon content (USD) via email in 1-3 business day ABOLISHED
GB/T 8639.2-1988 Vanadium; Determination of chromium content; Diphenylcarbazide spectrophotometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 2592.7-1981 Thallium;Determination of aluminum content;Chromazurol S photometric method (USD) via email in 1-3 business day ABOLISHED
GB/T 4375.10-1984 Methods for chemical analysis of gallium;The atomic absorption spectrophotometric method for the determination of zinc content (USD) via email in 1-3 business day ABOLISHED
GB/T 12690.23-1990 Rare-earth metals and their oxides--Determination of acid soluble silicon oxide--Molybdenum blue spectrophotometric method (USD) via email in 1 business day ABOLISHED
YS/T 540.3-2006 Vanadium -- Determination of aluminium content -- CAS-TPC spectrophotometric method (USD) via email in 1-3 business day ABOLISHED
YS/T 536.9-2006 Methods for chemical analysis of bismuth -- Determination of tellurium content -- Coprecipitation with arsenic-oscillopolarographic method (USD) via email in 1-3 business day ABOLISHED
YS/T 349.2-2010 Methods for chemical analysis of cobalt sulfide concentrate—Part 2:Determination of copper content—Flame atomic absorption spectrometry (USD) via email in 1-3 business day VALID
GB/T 4375.3-1984 Methods for chemical analysis of gallium;The chromazurol S-tetradecyl pyridine bromide photometric method for the determination of aluminum content (USD) via email in 1-3 business day ABOLISHED
GB/T 14633-1993 Rare-earth phosphorus with red green blue luminescence for fluorescent lamp (USD) via email in 1-3 business day ABOLISHED
GB/T 4864-1995 Calcium metal and its products via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YS/T 569.10-2006 Thallium--Determination of thallium content--EDTA volumetric method (USD) via email in 1-3 business day ABOLISHED
YS/T 536.5-2009 Methods for chemical analysis of bismuth—Determination of zinc content—Solid-liquid extraction-flame atomic absorption spectrophotometric method (USD) via email in 1-3 business day VALID
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