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GB/T 223.51-1987 Active
GB/T 223.51-1987 Methods for chemical analysis of iron，steel and alloy--The 2-(5-Bromo-2-pyridylazo)-5-diethylaminophenol photometric method for the determination of zinc content
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 223.51-1987 |
| CCS | Analysis methods for steel and iron alloys |
| ICS | Black metals |
| Implement Date | 1988-03-01 |
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