The Perfect tool for keeping a pool or spa in a safe chlorine and pH range, without chemicals or guesswork. The basic tool for measuring ph & chlorine quickly and accurately is the most commonly used water disinfectant for killing , algae and microorganisms. When chlorine and pH are from whack, it can cause diarrhea and infection of the ear and skin. A good chlorine and pH keep bad in the bay: if the pH is too high, the electricity killed by chlorine be exhausted. When a large amount of nitrogen (excreta, urine, sunscreen or sweat) or other organic matter enters the pool, chlorine is also eaten. 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. That's why testing chlorine and pH is the best all the time - she can change every day depending on the use of the pool. Keeping your pH within the proper range is important to keep the of the equipment and swimming pools. Your chlorine dissolve faster at low pH. A high ph value invalidate the chlorine.Accurate water measurement, care for the whole family's water health., Weight: 0.51477938177 pounds, Manufacturer: Prterver