JB/T 7774.3-1995
Method for chemical analysis of silver zinc oxide electrical contact materials Determination of bismuth content by thiourea spectrophotometry (English Version)
- Standard No.
- JB/T 7774.3-1995
- Language
- Chinese, Available in English version
- Release Date
- 1995
- Published By
- Professional Standard - Machinery
- Status
- 2008-07
- Replace By
- JB/T 7774.3-2008
- Latest
- JB/T 7774.3-2008
- Scope
- This standard specifies the method for determining the amount of bismuth in silver-zinc oxide electrical contact materials. This standard applies to the determination of bismuth content in silver-zinc oxide electrical contact materials. Measuring range: 0.05% ~ 0.50%.
JB/T 7774.3-1995 history
- 2008 JB/T 7774.3-2008 Test methods for chemical analysis of silver-zinc oxide electric contact material.Part 3:Determination of bismuth content
- 1995 JB/T 7774.3-1995 Method for chemical analysis of silver zinc oxide electrical contact materials Determination of bismuth content by thiourea spectrophotometry
