gb 7493
gb 7493, Total:2 items.
The international standard classification for "gb 7493" includes: Water quality .
The Chinese standard classification for "gb 7493" includes: Analysis methods for toxic substances in water .
中华人民共和国环境保护部
- GB 7493-1987 Water quality-Determination of nitrogen (nitrite)-Spectrophotometric method
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 7493-1987 quality - Determination of nitrogen (nitrite) - Spectrophotometric method
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