MARIMEX Electronic tester for pH and Cl

Electronic tester for measuring free chlorine. To ensure safe water in every pool, a tester is needed. The electronic pH and chlorine tester will help you to determine the pH and chlorine levels in your pool water, in the range (pH 5.5 to 9.0 ppm, Cl 0.2 to 3.0 ppm). You'll save money on disposable testers and tablets, so pool water testing will always be a breeze.