- Standard No.
- JB/T 7948.7-2017
- Language
- Chinese, Available in English version
- Release Date
- 2017
- Published By
- 工业和信息化部/国家能源局
- Latest
-
JB/T 7948.7-2017
- Replace
-
JB/T 7948.9-1999
JB/T 7948.7-2017 history
- 2017 JB/T 7948.5-2017 Methods for chemical analysis of fluxes Part 5: Determination of calcium fluoride content
- 1999 JB/T 7948.7-1999 Methods for chemical analysis of melted welding fluxes.The lead chlorofluoride-EDTA volumetric method for determination of calcium fluoride content
- 1970 JB/T 7948.7-1995 Methods of Chemical Analysis of Soldering Flux Part 7: Determination of Sodium Oxide and Potassium Oxide
JB/T 7948.7-2017 Flux chemical analysis methods Part 7: Determination of sodium oxide and potassium oxide content has been changed from JB/T 7948.9-1999 Methods for chemical analysis of melted welding fluxes.The flame photometric method for determination of sodium oxide and potassium oxide content.