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NH3-N is not a formula. It is an expression of Ammonia lab testing.

10 mg/L NH3-N means there are 10 mg/L Nitrogen in sample solution due to NH3.

In water, you can find NO3-N, NO2-N, NH4-N, etc. With the same definition as above, i believe you know what the meaning of them all.

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14y ago

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