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| Chinese National Standard Category: Steel and iron alloy analysis method |
| English Title: | Methods for chemical analysis of iron steel and alloy.The 5-CL-PADAB spectrophotometric method for the determination of cobalt content |
| Chinese Title: | 钢铁及合金化学分析方法 5-CI-PADAB分光光度法测定钴量 |
| Standard No.: | GB/T 223.21-1994 |
| Category No.: | H11 |
| Issued by: | AQSIQ |
| Issued on: | 1994-1-17 |
| Implemented on: | 1994-10-1 |
| Status: | valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | GB 223.21-1982 Chemical analysis of iron, steel and alloy--The determination of cobalt by the 5-Cl-PADAB photometric method |
| Word Count: | 2000 words |
| Similar Standards: | GB 4333.5-1984 GB/T 7730.5-2000 GB/T 7731.16-1999 GB/T 4333.9-1988 GB/T 7730.2-2002 GB/T 7730.8-2000 GB/T 8704.3-1997 GB 4010-1983 GB/T 8704.9-1994 GB 7731.3-1987 GB/T 5687.5-1988 GB/T 5686.9-2023 GB/T 3654.8-2023 GB/T 7731.17-2023 GB/T 5686.5-2023 GB/T 3653.3-2023 GB/T 223.92-2023 GB/T 4333.2-2023 GB/T 42794-2023 GB/T 5686.7-2022 |
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