Phosphate Test Kit, Model PO-23, Simple, low-cost color disc method is the most accurate visual test kit method, Achieve fast results with an easy-to-carry test kit
These mulit-parameter test strips test for five water quality measurements on 1 strip: Free Chlorine, Total Chlorine, Total Hardness, Total Alkalinity, and pH (6.2 - 8.4). 50 test strips.
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