Measure the total chlorine level from 0, 1, 5, 10, 20, 50 ppm, and pH from pH 4, 5, 6, 7, 8, 9, 10 15 seconds. These strips are packaged with 25 strips per bottle.
76%
Measure the total chlorine level from 0, 1, 5, 10, 20, 50 ppm, and pH from pH 4, 5, 6, 7, 8, 9, 10 15 seconds. These strips are packaged with 25 strips per bottle.
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