- Standard No.
- GB/T 5121.12-2008
- Language
- Chinese, Available in English version
- Release Date
- 2008
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
-
GB/T 5121.12-2008
- Replace
-
GB/T 13293.4-1991
GB/T 5121.12-1996
- Scope
- This method specifies the method for the determination of antimony content in copper and copper alloys. This section applies to the determination of antimony content in copper and copper alloys. Method 1 Measuring range: 0.00005% to 0.0020%. Method 2 Determination range: >0.0010%~0.070%. Method 3 is suitable for the determination of 0.001% to 0.1% antimony content in various copper and copper alloys listed in international standards. The scope of application can be expanded by appropriately changing the weighing amount, fractionation volume and thickness of the cuvette.
GB/T 5121.12-2008 history
- 2008 GB/T 5121.12-2008 Methods for chemical analysis of copper and copper alloys.Part 12:Determination of antimony content
- 1996 GB/T 5121.12-1996 Copper and copper alloys--Determination of antimony content
- 1991 GB/T 13293.4-1991 Higher purity copper cathode.Determination of antimony content 2-[(-5-bromo-2-pyridyl)azo]-5-diethylaminophenol spectrophotometric method
GB/T 5121.12-2008 Methods for chemical analysis of copper and copper alloys.Part 12:Determination of antimony content has been changed from GB/T 13293.4-1991 Higher purity copper cathode.Determination of antimony content 2-[(-5-bromo-2-pyridyl)azo]-5-diethylaminophenol spectrophotometric method.