Listen to Mom.

You don't want to have to lay down by your dog bowl again, now do you?

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I've purchased various chlorine/pH tests over the years but Taylor's K-2006 is, IMO, the very, very best. Its FAS-DPD chlorine test is idiot-proof, accurate and can test ridiculously high levels of chlorine. The others tests are great, as well. If you're like me (a bonafide testing fanatic) consider the 2 oz. reagent size of the K-2006C. Otherwise, the K-2006A will work just fine. Pool stores sell what sells the most -- and most of their customers have no idea what's important so just shop on the basis of price alone. That must be why so few (none in my area) stock the K-2006. Get it on-line, cheap, and be worry-free.......