- Standard No.
- GB/T 6987.20-2001
- Language
- Chinese
- Release Date
- 2001
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Replace By
-
GB/T 20975.20-2008
- Lastest
-
GB/T 20975.20-2020
- Scope
- This standard specifies the method for the determination of gallium content in aluminum and aluminum alloys. This standard applies to the determination of gallium content in aluminum and aluminum alloys. Measuring range: 0.005% to 0.050%.
GB/T 6987.20-2001 history
- 2020 GB/T 20975.20-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 20:Determination of gallium content—Butyrhodamine B spectrophotometric method
- 2008 GB/T 20975.20-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 20:Determination of gallium content.Butyrhodamine B spectrophotometric method
- 2001 GB/T 6987.20-2001 Aluminium and aluminium alloys--Determination of gallium content--Butyrhodamine B spectrophotometric method
GB/T 6987.20-2001 Aluminium and aluminium alloys--Determination of gallium content--Butyrhodamine B spectrophotometric method was changed to GB/T 20975.20-2008 Methods for chemical analysis of aluminium and aluminium alloys.Part 20:Determination of gallium content.Butyrhodamine B spectrophotometric method.