GB/T 14604-1993 Gases for electronic industry—Oxygen

GB/T 14604-2009 Gas for electronic industry—Oxygen

GB 8991 GB/T 14606 GB 190-1990 Labels for packages of dangerous goods GB 190-2009 Packing symbol of dangerous goods GB/T 3863-1995 Industrial oxygen GB/T 3863-2008 Industrial oxygen GB/T 4844-2011 Pure helium,high pure helium and ultra pure helium GB 4844.2-1995 Pure helium GB/T 4844.3-1995 High purity helium GB/T 5099-1994 Seamless steel gas cylinders GB/T 5099.1-2017 Seamless steel gas cylinders—Part 1:Quenched and tempered steel cylinders with tensile strength less than 1 100 MPa GB/T 5099.3-2017 Seamless steel gas cylinders—Part 3:Normalized cylinders GB/T 5099.4-2017 Seamless steel gas cylinders—Part 4:Seamless stainless steel gas cylinders GB/T 5832.2-1986 Determination of trace water in the gases—Dew point method GB/T 5832.2-2008 Determination of moisture in gases—Part 2:Dew point method GB/T 5832.2-2016 Gas analysis—Determination of moisture—Part 2:Dew point method GB/T 6680-2003 General rules for sampling liquid chemical products GB/T 6681-2003 General rules for sampling gaseous chemical products GB 7144-1999 Colored cylinder mark for gases GB/T 7144-2016 Coloured cylinder mark for gases GB/T 7445-1995 Pure hydrogen and high pruity hydrogen and ultra pure hydrogen GB/T 8984-2008 Determination of carbon monoxide,carbon dioxide and hydrocarbon in gases—Gas chromatographic method GB/T 8984.1-1997 Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 1:Determination of carbon monoxide,carbon dioxide and mathane in the gases—Gas chromatographic method GB/T 8984.2-1997 Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 2:Determination of total content of carbon monoxide,carbon dioxide and hydrocarbon in gases—Gas chromatographic method GB/T 8984.3-1997 Determination of carbon monoxide,carbon dioxide and hydrocarbon in the gases—Part 3:Determination of total hydrocarbon in gases—Flame ionization method GB/T 14605-1993 Determination of trace argon, nitrogen and krypton in oxygen—Gas chromatographic method GB/T 8984-2025 Gas analysis—Determination of the contents of trace carbon monoxide, carbon dioxide and hydrocarbon in gases—Gas chromatography with flame ionization detector GB/T 3863-2025 Industrial oxygen GB/T 4844-2025 Pure helium,high purity heliun and ultra purity helium