
Revain shows this is a common purchase with Hotsprings freshwater test strips and spa salt. However, this does NOT measure the correct salt range for Hotsprings spas! It only tests up to 1000ppm and you need 2500ppm. Too bad I didn't trust the ad. After opening the pipe and testing the water, I figured out the problem. Total waste of $20 and I'm upset with Revane and the seller. If they are really often bought together, then Revain or the seller is cheating people. Maybe this is a great product for a different use. But I wouldn't know as the seller provides very little information.

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