Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 26249-2010 Gases for electronic industry—Hydrogen selenide 240.0 via email in 1~3 business day valid
GB/T 16944-2009 Gas for electronic industry—Nitrogen 180.0 via email in 1~3 business day valid
GB/T 31986-2015 Gas for electronic industry―Perfluoropropane 165.0 via email in 1~3 business day valid
GB/T 14605-1993 Determination of trace argon, nitrogen and krypton in oxygen-Gas chromatographic method 75.0 via email in 1~3 business day abolished
GB/T 5832.1-2016 Gas analysis―Determination of moisture―Part 1:Electrolytic method 105.0 via email in 1~3 business day valid
HG 2685-1995 Medical Nitrous Oxide 180.0 via email in 1~3 business day valid
HG/T 3661.2-1999 Burning gases for welding and cutting - propane 30.0 via email in 1~3 business day abolished
AQ 3051-2015 Technical Requirements for Automation Control System of Liquid Chlorine Cylinder Filling via email in business day valid
GB/T 8979-2008 Pure nitrogen and high purity nitrogen and ultra pure nitrogen 60.0 via email in 1~3 business day valid
GB/T 3864-2008 Industrial Nitrogen 60.0 via email in 1 business day valid
GB/T 5829-2006 Krypton 105.0 via email in 1~3 business day valid
GB/T 14850-2008 Gas analysis - Vocabulary 300.0 via email in 1~3 business day valid
GB/T 5275.5-2014 Gas analysis―Preparation of calibration gas mixtures using dynamic volumetric methods―Part 5:Capillary calibration devices 255.0 via email in 1~3 business day valid
GB/T 22025-2008 Aerosol grade isobutane(A-31) 240.0 via email in 1~3 business day valid
GB/T 23938-2009 High purity carbon dioxide 120.0 via email in 1~3 business day valid
GB/T 18994-2003 Gases for electronic industry—High purity chlorine 90.0 via email in 1~3 business day superseded
GB/T 28727-2012 Gas analysis—Determination of sulfides—Gas chromatograph with flame photometric detector 150.0 via email in 1~3 business day valid
GB/T 22024-2008 Aerosol grade n-butane (A-17) 150.0 via email in 1~3 business day valid
GB/T 3863-1995 Industrial oxygen 135.0 via email in 1~3 business day abolished
GB/T 32386-2015 Gases for electronic industry―Tungsten hexaflouride 255.0 via email in 1~3 business day valid
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