1. Essential tool for fast and accurate pH and chlorine measurements, as chlorine is the most widely used water disinfectant by killing bacteria, algae, and microorganisms. 2. An ideal tool for keeping your pool or spa within safe chlorine and pH ranges without chemicals or guesswork. 3. An electro-tester for testing pH and chlorine (Cl2) levels in water for routine monitoring of pH and chlorine levels in swimming pools, spas, and various water sources. 4. Save time and money with this electro-tester. Note: Probes are not recommended to be immersed in any liquid other than pool or spa water. Package Contents: 1 x pH and Cl2 Tester with Probe 1 x User Manual Features: Name: PH CL2 Chlorine Tester The recommended chlorine level for pools and spas is 1.2-1.7 ppm The recommended pH level for pools and spas is 7.2-7.8 Dimensions: Power Supply: 1 AA Alkaline Battery (1.5V) (not included) When chlorine and pH levels go wild, it can lead to diarrhea and ear and skin infections. A good chlorine and pH level keeps bad bacteria away: if the pH rises too high, the germ-killing power of the chlorine is drained away. Chlorine can also be eaten away if a lot of nitrogen (from debris, puddles, sunscreen, or perspiration) or other organic products enter the pool. That's why it's best to test chlorine and pH levels all the timethey can change daily depending on pool usage. Keeping your pH levels in the right range is important for keeping your pool equipment and finish intact. Your chlorine dissolves faster with a low pH level. High pH levels make chlorine inactive. Number of products: 1 piece Color: gray Size: 125*180mmLonvre