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Ammonia as Nitrogen. ALS Environmental may or may not test for Ammonia as Nitrogen (CAS # 7664-41-7). Information is subject to change; please contact us for the latest available analytes for which we test.
Ammonia is the only common alkaline gas. Its density is about half that of air and it has a characteristic smell. Its maximum safe level is 25ppm but its alkalinity makes it highly reactive with acid gases and chlorine and its presence in atmospheres containing other gases is often masked by this.