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GB/T 4324.15-2008 Methods for chemical analysis of tungsten - Determination of magnesium content - The flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry $120.00 via email in 1~3 business day valid
GB/T 4324.16-2012 Methods for chemical analysis of tungsten - Part 16: Determination of loss content on ignition - Gravimetric method $100.00 via email in 1~3 business day valid
GB/T 4324.17-2012 Methods for chemical analysis of tungsten - Part 17: Determination of sodium content - Flame atomic absorption spectrometry $120.00 via email in 1~3 business day valid
GB/T 4324.18-2012 Methods for chemical analysis of tungsten - Part 18: Determination of potassium content - Flame atomic absorption spectrometry $120.00 via email in 1~3 business day valid
GB/T 4324.19-2012 Methods for chemical analysis of tungsten - Part 19: Determination of titanium content - The diantipyrylmethane photometric spectrophtometry $120.00 via email in 1~3 business day valid
GB/T 4324.2-2023 Methods for chemical analysis of tungsten—Part 2:Determination of bismuth and arsenic contents $260.00 via email in 1~3 business day valid
GB/T 4324.20-2012 Methods for chemical analysis of tungsten - Part 20: Determination of vanadium content - Inductively coupled plasma atomic emission spectrometry $120.00 via email in 1~3 business day valid
GB/T 4324.21-2012 Methods for chemical analysis of tungsten - Part 21: Determination of chromium content - Inductively coupled plasma atomic emission spectrometry $120.00 via email in 1~3 business day valid
GB/T 4324.22-2012 Methods for chemical analysis of tungsten - Part 22: Determination of manganese content - Inductively coupled plasma atomic emission spectrometry $120.00 via email in 1~3 business day valid
GB/T 4324.23-2012 Methods for chemical analysis of tungsten - Part 23: Determination of sulfur content - The combustion-conductometric titration and high frequency combustion-infrared absorption method $180.00 via email in 1~3 business day valid
GB/T 4324.24-2012 Methods for chemical analysis of tungsten - Part 24: Determination of phosphorus content - Molybdemum blue photometry $160.00 via email in 1~3 business day valid
GB/T 4324.25-2012 Methods for chemical analysis of tungsten - Part 25: Determination of oxygen content - Pulse heating inert gas fusion-infrared absorption method $120.00 via email in 1~3 business day valid
GB/T 4324.26-2012 Methods for chemical analysis of tungsten - Part 26: Determination of nitrogen content - Pulse heating inert gas fusion-thermal conductive method and the Nessler reagent spectrophotometry $160.00 via email in 1~3 business day valid
GB/T 4324.27-2012 Methods for chemical analysis of tungsten - Part 27:：Determination of carbon content - High frequency combustion-infrared absorption method $120.00 via email in 1~3 business day valid
GB/T 4324.28-2012 Methods for chemical analysis of tungsten - Part 28: Determination of molybdenum content - The thioyanate spectrophotometry $120.00 via email in 1~3 business day valid
GB/T 4324.3-2012 Methods for chemical analysis of tungsten - Part 3: Determination of tin content - Hydrogenate atomic absorption spectrometry $160.00 via email in 1~3 business day valid
GB/T 4324.4-2012 Methods for chemical analysis of tungsten - Part 4: Determination of antimony content - Hydrogenate atomic absorption spectrometry $120.00 via email in 1~3 business day valid
GB/T 4324.5-2012 Methods for chemical analysis of tungsten - Part 5: Determination of arsenic content - Hydrogenate atomic absorption spectrometry $160.00 via email in 1~3 business day superseded
GB/T 4324.6-2012 Methods for chemical analysis of tungsten - Part 6: Determination of iron content-1,10-phenanthroline spectrophotometry $120.00 via email in 1~3 business day valid
GB/T 4324.7-2012 Methods for chemical analysis of tungsten - Part 7: Determination of cobalt content - Inductively coupled plasma atomic emission spectrometry $120.00 via email in 1~3 business day valid
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