Dip dipsticks are a quick and easy way to check chemical levels in an above ground pool or hot tub. Check your water balance with chlorine, alkalinity and pH test strips, allowing you to determine which chemicals need to be added to keep it within the correct parameters. Untested water can become a breeding ground for beast bacteria, or create a chemical imbalance that makes eyes and skin uncomfortable. Quickly measure pH, chlorine and alkalinity Identify any necessary chemical adjustments Reliable and Accurate Readings easy to follow instructions measure: pH Measure the pH of water to ensure water safety and comfortable use. The pH should be 7.2 7.6 chlorine Make sure your swimming pool or hot tub has the correct chlorine levels to help keep bacteria and harmful organisms at bay. Chlorine levels should be 1-3 mg/l (ppm) for swimming pools and 3-5 mg/l (ppm) for hot tubs total alkalinity Measure total alkalinity levels to help prevent your water from becoming corrosive. Levels should measure 80 100 ppm or 100 120 ppm