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GB/T 4921-1985 Active
GB/T 4921-1985 Waste gas from manufacturing process—Determination of chemical oxygendemand and nitrogen oxide—Potassium dichromate oxidation and naphthylethylene diamine colorimetric method
General Product Information
| Committee | National Environmental Protection Agency, Planning and Standards Division |
|---|---|
| Document Type | National standards |
| Publisher Name | The State Environmental Protection Administration |
| Standard Status | Active |
| Standard Code | GB/T 4921-1985 |
| CCS | Industrial wastewater and pollutant analysis methods |
| ICS | Comprehensive Water Testing |
| Implement Date | 1985-08-01 |
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