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GB/T 8654.1-2007 Manganese metal ferromanganese-silicon ferromanganese and nitrogen-bearing ferromanganese—Determination of iron content—The ortho-phenanthrdine spectrophotometric method and the titanium trichloride-potassium dichromate titrimetric method (USD) via email in 1-3 business day VALID
GB/T 5687.11-2006 Ferrochromium—Determination of titanium content—Diantipyrylmethane spectrophotometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB 7731.8-1987 Methods for chemical analysis of ferrotungsten-The tetraethylrhodamine photometric method for the determination of antimony content (USD) via email in 1-3 business day ABOLISHED
GB/T 5059.1-2014 Ferromolybdenum—Determination of molybdenum content—Lead molybdate gravimetric method,ammonium metavanadate titration method and 8-hydroxyquinoline gravimetric method (USD) via email in 1-3 business day VALID
JB/T 9220.7-1999 Chemical analysis methods for acid slay of cupola - Determination of calcium oxide by volumetric method using potassium permanganate via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB 3654.9-1983 Methods for chemical analysis of ferroniobium;The thiocyanate photometric method for the determination of tungsten content (USD) via email in 1-3 business day VALID
JB/T 9220.10-1999 Chemical analysis methods for acid slay of cupola - Determination of sulphur by gravimetric method using barium sulfate via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 4139-2012 Ferrovanadium (USD) via email in 1-3 business day VALID
GB/T 4010-1994 Ferroalloys-Sampling and preparation of samples for chemical analysis via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB 4333.6-1988 Methods for chemical analysis of ferrosilicon-The diphenylcarbazide photometric method for the determi nation of chromium content (USD) via email in 1-3 business day ABOLISHED
GB 3654.4-1983 Methods for chemical analysis of ferroniobium;The combustion gravimetric method for the determination of carbon content (USD) via email in 1-3 business day VALID
GB/T 3654.8-2008 Ferroniobium - Determination of tianiun content - Chromotropic acid photometric method (USD) via email in 1-3 business day VALID
GB/T 7731.15-1999 Methods for chemical analysis of ferrotungsten-The flame atomic absorption spectrometric method for the determination of copper content (USD) via email in 1-3 business day ABOLISHED
GB/T 4333.5-1997 Methods for chemical analysis of ferrosilicon-the EDTA volumetric method for the determination of aluminium content via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
YB/T 4460-2015 High purity ferrosilicon via email in VALID please email coc@codeofchina.com for quotation
YB/T 4174.1-2008 Silicon-calcium alloy-Determination of aluminum content-Inductively coupled plasma atomic spectrometric method (USD) via email in 1-3 business day VALID
GB/T 4701.4-1984 Methods for chemical analysis of ferrotitanium;The persulfate-arsenite volumetric method for the determination of manganese content (USD) via email in 1-3 business day ABOLISHED
GB/T 7730.1-2002 Ferromanganese and blast furnace ferromanganese--Determination of manganese content--Potentiometric method and titrimetric method after ammonium nitrate oxidation via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 8704.1-2009 Ferrovanadium—Determination of carbon content—The infrared absorption method and the gasometric method (USD) via email in 1-3 business day VALID
YB/T 5313-2016 Calcium silicon alloy—Determination of calcium content—EDTA titrimetric method via email in VALID please email coc@codeofchina.com for quotation
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