Product Description: PH CL2 Chlorine Tester Essential tool for fast and accurate pH and chlorine readings, as chlorine is the most commonly used disinfectant for water by killing bacteria, algae and microorganisms. A great tool to keep your pool or spa within safe chlorine and pH ranges, no more chemicals or guesswork. An electro-tester to test pH and chlorine (Cl2) levels in water for routine monitoring of pH and chlorine levels in pools, spas and various water sources. When chlorine and pH levels are out of whack, it can lead to diarrhea, ear and skin infections. Proper chlorine and pH levels keep bad bacteria at bay: if the pH rises too high, the germicidal power of chlorine is reduced. Chlorine can also be consumed if a lot of nitrogen (from debris, urine, sunscreen, or sweat) or other organic matter gets into the pool. This is why it is best to test chlorine and pH levels constantly, as they can change from day to day depending on pool usage. It is important to keep the pH in the proper range to preserve the integrity of your equipment and your pool's finish. Your chlorine will dissolve faster at a low pH. High pH levels render chlorine inactive. Save time and money with this electro-tester. NOTE: It is recommended that you DO NOT immerse the probes in any liquid other than pool or spa water. Specifications The recommended chlorine level for pools and spas is 1.2 to 1.7 ppm The recommended pH level for pools and spas is 7.2 to 7.8 Dimension Main unit: 190 x 120 mm Probe with handle: 150 mm long Probe (only): 48 mm long Cable (only): 130 mm long Power supply: 1 x alkaline battery AA (1.5V) Weight: 160g (battery not included) Set Included 1 x pH and Cl2 Tester with Probe 1 x Instruction Manual 1 x Sandpaper Factory Standard Packaging Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.