GB/T 4844-2011 (English Version) Pure helium,high pure helium and ultra pure helium

Standard No.: GB/T 4844-2011
Language: Chinese, Available in English version
Release Date: 2011
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 4844-2011
Replace: GB 4844.2-1995 GB/T 4844.3-1995

Scope: This standard specifies the technical requirements, inspection rules, inspection methods, product packaging, marking, storage and safety warnings of gaseous helium and liquid helium. This standard applies to pure helium, high-purity helium and ultra-pure helium extracted by cryogenic methods, mainly used in optical fiber, laser, welding and cutting, diving breathing, low-temperature superconducting, pressurization, cleaning, protective gas, etc. Molecular formula: He. Relative molecular mass: 4.002 602 (according to the international relative atomic mass in 2007).

GB/T 4844-2011 Referenced Document

GB 14194 Rules for filling of permanent gas cylinders
GB 190 Packing symbol of dangerous goods
GB 5099 Seamless steel gas cylinders
GB 7144 Coloured cylinder mark for gases
GB/T 5832.1 Gas analysis—Determination of water—Part 1: Electrolytic method*， 2016-12-13 Update
GB/T 5832.2 Gas analysis—Determination of water—Part 2: Dew point method*， 2016-12-13 Update
GB/T 5832.3 Determination of moisture in gases.Part 3:The method of Cavity Ring-Down Spectroscopy
JB/T 5905 Cryogenic liquid containers insulated with evacuated multilayer insulations

GB/T 4844-2011 Pure helium,high pure helium and ultra pure helium has been changed from GB 4844.2-1995 Pure helium.