Works reasonably well although tricky to tell exact colour change to within one drop. Advertised as enough for 80 tests. Don't know how - I've done just one test and solutions are half gone. Lucky to get more than two tests, let alone 80.
Verified purchase: Yes | Condition: New
Great product, fantastic value for the number of tests included. Instructions are clear and the cards with the colour indicators are easy to follow. The carry case keeps all the bottles in place. Only down side you need to be aware of is the tubes for the tests not watertight when shacking with the push on lids and the test fluid can stain.
Verified purchase: Yes | Condition: New
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