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YS/T 226.7-1994 Determination of silicon content in selenium--Silicon-molybdenum blue photometric method (USD) via email in 1-3 business day ABOLISHED
YS/T 981.3-2014 Methods for chemical analysis of high pure indium—Determination of silicon content—Molybdenum blue spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 3489-1983 Hardmetals; Metallographic determination of porosity and uncombined carbon (USD) via email in 1-3 business day ABOLISHED
YS/T 426.6-2000 Method for chemical analysis of antimony-beryllium pellets—Determination of beryllium oxide content—Bromine methanol method (USD) 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 via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 461.9-2003 The methods for chemical analysis of lead and zinc bulk concentrates—The determination of silver content—The atomic absorption method (USD) via email in 1-3 business day ABOLISHED
GB/T 8493-1987 Metallograph of cast carbon steels for general engineering purposes (USD) via email in 1-3 business day
YS/T 422.4-2000 Methods for chemical analysis of chromium carbide—Determination of silicon content (USD) via email in 1-3 business day VALID
YS/T 422.2-2000 Methods for chemical analysis of chromium carbide—Determination of total carbon content (USD) via email in 1-3 business day VALID
GB/T 21994.7-2008 Chemical analysis of magnesium fluoride - Part 7: Determination of iron content - Orthophenantholine photometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
YS/T 227.2-1994 Determination of aluminum content in tellurium--Chromazurol S-tetradecyl pyridine bromide photometric method (USD) via email in 1-3 business day ABOLISHED
YS/T 981.5-2014 Methods for chemical analysis of high pure indium—Determination of thallium content—Rhodamine B spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 13301-1991 Metals-Testing method for sensitivity of electrical resistance strain (USD) via email in 1-3 business day VALID
YS/T 475.5-2005 Methods for chemical analysis of cast bearing metals -- Determination of arsenic content -- Molybdoantimonyarsenate blue spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 223.13-2000 Methods for chemical analysis of iron, steel and alloy-The ammonium ferrous sulfate titration method for the determination of vanadium content (USD) via email in 1-3 business day VALID
YB/T 5041-1993 Chemical analysis of lump molybdenum oxide The determination of sulfur by the volumetric method of combustion-potassium idatet (USD) via email in 1-3 business day ABOLISHED
YS/T 37.4-1992 (USD) via email in 1-3 business day ABOLISHED
YB/T 5316-2006 Methods for chemical analysis of calcium-silicon The infrared absorption method the determination of carbon content (USD) via email in 1-3 business day ABOLISHED
YS/T 244.6-2008 Chemical analysis methods of high purity aluminum Part 6:Determination of silver content by calalyze reaction system of manganese-persulfric acid method (USD) via email in 1-3 business day VALID
GB/T 10421-1989 Sintered metal friction materials--Determination of density (USD) via email in 1-3 business day ABOLISHED
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