gb7493-1987
gb7493-1987, Total:2 items.
The international standard classification for "gb7493-1987" includes: Water quality .
The Chinese standard classification for "gb7493-1987" 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
