GB/T 4844.3-1995
High pruity helum (English Version)
- Standard No.
- GB/T 4844.3-1995
- 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
- 2012-10
- Replace By
- GB/T 4844-2011
- Latest
- GB/T 4844-2011
- Scope
- This standard specifies the technical requirements, inspection methods, inspection rules, and product packaging, marking, storage and transportation of high-purity helium products. This standard applies to bottled high-purity gaseous helium extracted from natural gas, air or factory bleed gas by cryogenic method. It is mainly used for the preparation of standard mixed gas, low temperature superconductivity, scientific research, chromatographic analysis carrier gas, etc.
GB/T 4844.3-1995 history
- 2011 GB/T 4844-2011 Pure helium,high pure helium and ultra pure helium
- 1995 GB/T 4844.3-1995 High pruity helum
GB/T 4844.3-1995 High pruity helum was changed to GB/T 4844-2011 Pure helium,high pure helium and ultra pure helium.
