bertoni |
02/06/2018 06:59 PM |
Ammonia (NH<sub>3</sub>) tends to convert to ammonium (NH<sub>4</sub><sup>+</sup>) in water. Ammonium is less dangerous to animals than ammonia because charged particles are more easily excluded by the cell membrane. The pH determines the ratio of those ions.
In addition, chemicals like Prime bind ammonia, but test kits often will undo the binding in the process of running the test, and detect ammonia that's actually bound and safe for the animals. Depending on how strictly the term is being used, some might count that as part of total ammonia. Which kit are you using, or is this more of learn-in-advance question?
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