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GB/T 6730.21-2016 Iron ores―Determination of manganse content―Potassium periodate spectrophotometric method 150.0 via email in 1~3 business day valid
GB/T 10322.1-2014 Iron ores―Sampling and sample preparation procedures 910.0 via email in 1~10 business day valid
YS/T 1047.11-2015 Methods for chemical analysis of copper magnetite―Part 11:Determination of magnet iron content―Potassium dichromate titration method 144.0 via email in 1~3 business day valid
GB/T 6730.70-2013 Iron ores - Determination of total iron content - Titrimetric method after tin(Ⅱ) chloride reduction 200.0 via email in 1~3 business day valid
GB/T 24235-2009 Iron ores for shaft direct-reduction feedstocks—Determination of the low temperature reduction-disintegration index and degree of metallization 170.0 via email in 1 business day valid
GB/T 6730.23-2006 Iron ores - Determination of titanium content - The ferric ammonium sulfate titrimetric method 180.0 via email in 1~3 business day valid
GB/T 6730.22-2016 Iron ores―Determination of titanium content―Diantipyrylmethane spectrophotometric method 160.0 via email in 1~3 business day valid
GB/T 6730.59-2017 Iron ores--Determination of manganese content--Flame atomic absorption spectrometric method 240.0 via email in 1~3 business day valid
GB 6730.36-1986 Methods for chemical analysis of iron ores - The flame atomic absorption spectrophotometric method for the determination of copper content 60.0 via email in 1~3 business day abolished
GB 6730.32-1986 Methods for chemical analysis of iron ores - The ferrous sulfate volumetric method for the determination of vanadium content 75.0 via email in 1~3 business day abolished
GB/T 6730.75-2017 Iron ores - Determination of sodium content - Flame atomic absorption spectrometric method 160.0 via email in 1~3 business day valid
GB 6730.27-1986 Methods for chemical analysis of iron ores - The lanthanum-alizarin complexon photometric method for the determination of fluorine content 60.0 via email in 1~3 business day abolished
GB 6730.17-1986 Methods for chemical analysis of iron ores; The combustion iodometric method for the determination of sulfur content 60.0 via email in 1~3 business day abolished
GB/T 10322.3-2000 Iron ores--Experimental methods for checking the precision of sampling 285.0 via email in 1~5 business day valid
YS/T 1047.1-2015 Methods for chemical analysis of copper magnetite―Part 1:Determination of copper content―2,2-biquinoly spectrophotometric method and flame atomic absorption spectrometric method 165.0 via email in 1~3 business day valid
GB/T 6730.45-2006 Iron ores - Determination of arsenic content - Arseno-molybdenum blue spectrophotometric method after hydrogen arsenide separation 120.0 via email in 1~3 business day valid
GB/T 6730.39-2017 Iron ores--Determination of nickle content--Dimetylglyoxime spectrophotometric method 170.0 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 165.0 via email in 1~3 business day valid
GB/T 25953-2010 Nonferrous metals mineral processing and iron concentrate recovering 110.0 via email in 1~3 business day valid
YS/T 1047.10-2015 Method for chemical analysis of copper magnetite―Part 10:Determination of iron(Ⅱ)oxide content―Potassium dichromate titration method 144.0 via email in 1~3 business day valid
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