I'm not sure if I'm having a bad test or what but it always shows 0 even though I know I have There is ammonia in the water or I add ammonia directly to the water before testing. In addition, I did not receive the described kit with two separate reagents and the name "NH4 Profi Test". Instead, the kit I received contains only one reagent and is called "NH3 Profi-Test" (not sure if this is an old kit or something new). high). I've heard a lot about these kits but am very disappointed with this kit (especially $15 for a review).
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