GB/T 4844.1-1995
Industrial helium (English Version)
- Standard No.
- GB/T 4844.1-1995
- Language
- Chinese, Available in English version
- Release Date
- 1995
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- Latest
- GB/T 4844.1-1995
- Replace
- GB 4845-1984 GB 4844-1984
- Scope
- This standard specifies the technical requirements, inspection methods, inspection rules, and product packaging, marking, storage, and transportation of industrial helium. This standard applies to bottled gaseous helium extracted from natural gas, air or factory bleed gas by cryogenic method or membrane permeation method. Mainly used for leak detection, filling balloons, helium airships, flying ships, etc. Molecular formula: He. Relative molecular mass: 4.00260 (according to the international relative atomic mass in 1991).
GB/T 4844.1-1995 history
- 2011 GB/T 4844-2011 Pure helium,high pure helium and ultra pure helium
- 1995 GB/T 4844.1-1995 Industrial helium
- 0000年 GB 4844-1984
GB/T 4844.1-1995 has been changed from GB 4845-1984 Nitrogen test method.