What are the norms of world health organization about hardness of water?
Answers
Answered by
1
Answer:
The 1993 Guidelines established provisional health- based guideline values of 0.09 mg/litre for dichloroacetonitrile, 0.1 mg/litre for dibro- moacetonitrile and 0.001mg/litre for trichloroacetonitrile.
Similar questions