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GB/T 6730.7-2016 Iron ores—Determination of metallic iron content—Sulfosalicylic acid spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 6730.58-2004 Iron ores—Determination of vanadium content—Flame atomic absorption spectrometric methods via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 6730.19-2016 Iron ores—Determination of phosphorus content—Bismuth phosphomolybdate blue spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 6730.25-2006 Iron ores - Determination of total rare earth contents - Oxalate gravimetric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 6730.3-2017 Iron ores—Determination of hygroscopic moisture in analytical samples—Gravimetric,Karl Fischer and mass-loss methods (USD) via email in 1-3 business day VALID
GB/T 6730.21-2016 Iron ores—Determination of manganse content—Potassium periodate spectrophotometric method (USD) via email in 1-3 business day VALID
GB/T 24241-2009 Direct reduced iron—Determination of the tumble and abrasion indices of hot briquetted iron (HBI) (USD) via email in 1-3 business day VALID
GB/T 24239-2009 Direct reduced iron and hot briquetted iron—Sampling and sample preparation (USD) via email in 1-5 business day VALID
GB 6730.44-1986 Methods for chemical analysis of iron ores; The 1-(2-pyridylazo)-2-naphthol photometric method for the determination of zinc content (USD) via email in 1-3 business day ABOLISHED
GB/T 6730.66-2009 Iron ores—Determination of total iron content—Automatic potentiometric titration method (USD) via email in 1-3 business day VALID
YS/T 1047.2-2015 Methods for chemical analysis of copper magnetite—Part 2:Determination of total iron content—Potassium dichromate titration methods (USD) via email in 1-3 business day VALID
GB/T 10322.6-2004 Iron ore—Determination of decrepitation index via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 6730.20-2016 Iron ores—Determination of phosphorus content—Titrimetric method (USD) via email in 1-3 business day VALID
GB 6730.50-1986 Methods for chemical analysis of iron ores; The gas volumetric method for the determination of total carbon content (USD) via email in 1-3 business day ABOLISHED
GB 6730.2-1986 Methods for chemical analysis of iron ores; Gravimetric method for the determination of moisture content (USD) via email in 1-3 business day ABOLISHED
GB/T 6730.9-1986 Methods for chemical analysis of iron ores; The silicomolybdic blue photometric method for the determination of silicon content (USD) via email in 1-3 business day ABOLISHED
GB/T 6730.8-2016 Iron ores—Determination of iron(Ⅱ) content—Potassium dichromate titrimetric method (USD) via email in 1-3 business day VALID
GB/T 6730.72-2016 Iron ores—Determination of arsenic,chromium,cadmium,lead and mercury content—Inductively coupled plasma-mass spectrometry method (ICP-MS) (USD) via email in 1-3 business day VALID
GB/T 32545-2016 Division of production grade for iron ores (USD) via email in 1 business day VALID
GB/T 24190-2009 Iron ores—Determination of combined water—Karl Fischer method (USD) via email in 1-3 business day VALID
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