I've never had to test water and when I started searching I found all sorts of tests with recommendations, varying prices and not much absolute consistency on the type and manner in which any of it was presented. (As you would expect in a free market that's gone wild west.) I only tried two of the tests in this kit because they didn't match the color of the instructions. Gray not pink etc. Very good value set compared to others but if you can't trust the results.
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