FREE CHLORINE AND PH LEVELS. CHLORINE -0.5 - 6.0 ppm(parts per million). 2 X 10 DPD No 1 CHLORINE TEST TABLETS. PH -6.8 - 8.0. 2 X 10 PHENOL RED PH TEST TABLETS. QUALITY WATER TEST KIT. A VERY ACCURATE TEST KIT.
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