- Standard No.
- GB/T 223.50-1994
- Language
- Chinese, Available in English version
- Release Date
- 1994
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
-
GB/T 223.50-1994
- Replace
-
GB 223.50-1985
- Scope
- This standard specifies the direct photometric method for the determination of tin content by phenylfluorone-hexadecyltrimethylamine bromide. This standard applies to the determination of tin content in pig iron, carbon steel and low alloy steel. Measuring range: 0.0050% to 0.20%.
GB/T 223.50-1994 history
- 1994 GB/T 223.50-1994 Methods for chemical analysis of iron, steel and alloy. The phenylfluorone-CTMAB direct photometric method for the determination of tin content
- 1985 GB 223.50-1985 Methods for chemical analysis of iron,steel and alloy--The phenylfluorone-CTMAB direct photometric method for the determination of tin content
GB/T 223.50-1994 Methods for chemical analysis of iron, steel and alloy. The phenylfluorone-CTMAB direct photometric method for the determination of tin content has been changed from GB 223.50-1985 Methods for chemical analysis of iron,steel and alloy--The phenylfluorone-CTMAB direct photometric method for the determination of tin content.