Features1Safe to chlorine based tablet pool, pH needs to be correct. If pool water is not balanced correctly then the chlorine disinfectant won't be working at full strength killing germs. 2Light weight and easy to carry around, convenient to use, you can save time and money with this electro?tester. 3Essential tool for quick and accurate readings of ph & chlorine as chlorine is the most commonly used disinfectant for water by killing germs, algae and microorganisms. 4Great tool for keeping your pool or spa within the safe Chlorine and PH ranges, no more chemicals or no more guessing work. 5An electro?tester for testing pH and chlorine (Cl2) levels in water for routine monitoring of pH and chlorine levels of swimming pools, spas and different water sources.SpecificationCondition: 100% Brand NewItem Type: Water Quality TesterMaterial: PlasticColor: As shown in the pictureHost Size: Approx.Size: Approx. 190x120mm / 7.5x4.7in Probe with Handle Length: Approx. 150mm / 5.91inProbe Length: Approx.48mm / 1.89inCable Length: Approx.130mm / 5.12inWeight: Approx.259g/9.1ozBattery: 1 x AA alkaline battery 1.5V (Not included)Recommended chlorine content for swimming pools and spas from 1.2 to 1.7 ppmRecommended pH for pools and spas is 7.2 to 7.8phDescription: When chlorine and pH levels go out of whack, it can lead to diarrhea and ear and skin infections. A good chlorine & pH level keeps bad germs at bay: If pH goes up too high, chlorine's germ-killing power deflates. Chlorine can also get eaten up if a lot of nitrogen (from debris, pee, sunscreen, or sweat) or other organic matter gets in the pool. That's why its best to test chlorine and pH levels all the time they can change day to day based on pool usage. Keeping your pH levels within the proper range is important for keeping your equipment and pool finish intact. Your chlorine will dissolve quicker with a low pH level. High pH levels make chlorine inactive.Package List1 x PH CL2 Tester with Probe(Battery Not Included) 1 x Instruction Manual