JJF 1342-1990
Low background 4πα, 4πβ activity benchmark operation technical specification (English Version)
- Standard No.
- JJF 1342-1990
- Language
- Chinese, Available in English version
- Published By
- National Metrological Technical Specifications of the People's Republic of China
- Status
- 2012-07
- Replace By
- JJF 1342-2012
- Latest
- JJF 1342-2022
JJF 1342-1990 history
- 2022 JJF 1342-2022 General Requirements for the Competence of Reference Material Producers
- 2012 JJF 1342-2012 General Requirements for Reference Material Producers
- 1970 JJF 1342-1990 Low background 4πα, 4πβ activity benchmark operation technical specification
