PH Cl2 chlorine tester The basic tool for quickly and accurately measuring ph & chlorine is the most commonly used water disinfectant used to kill bacteria, algae and microorganisms. When chlorine and ph get from whack, it can cause diarrhea and ear and skin infections. A good chlorine and pH keep bad bacteria in the bay: if the pH is too high, the electricity killed by the chlorine will be exhausted. When a large amount of nitrogen (feces, urine, sunscreen or sweat) or other organic matter enters the pool, the chlorine is also eaten. This is why testing chlorine and pH is the best all the time-she can change every day according to swimming pool usage. Keeping your pH in the proper range is important to maintain the surface treatment of equipment and swimming pools. Your chlorine will dissolve faster at low pH. The high pH value will invalidate the chlorine. APPLICATIONS: An electrical tester for ph and chlorine (Cl2) levels for routine monitoring of ph and chlorine levels in swimming pools, spas and various water sources.