PH Cl2 Chlorine Tester The essential tool for quick and accurate measurement of pH & chlorine is the most commonly used water sanitizer for killing bacteria, algae and micro - organisms. The perfect tool for keeping a pool or spa within a safe chlorine and pH range, chemical-free and without the guesswork. Electric tester for chlorine levels pH and Chlorine (Cl2) for routine monitoring of pH and chlorine levels in swimming pools, spas and various water sources. When Whack Chlorine and pH, it can cause diarrhea and ear and skin infections. Good chlorine and pH keep bad bacteria at bay: if the pH is too high, the chlorine kills the electricity runs out. Chlorine is also consumed when large amounts of nitrogen (feces, urine, sunscreen, or perspiration) or other organic substances enter the pool. That's why testing chlorine and pH is best for all the time - it can change every day depending on how the pool is used. Keeping your pH in the correct range is important for maintaining the finish of your equipment and pool. Your chlorine dissolves faster at a low pH. High pH deactivates chlorine gas. This electric meter saves you time and money. Note: The detector will not be immersed in recommended water except swimming pool or SPA water. Specifications sheet The recommended chlorine content for pools and spas is 1.2-1.7 PPM Recommended PH 7.2-7.8 for pools and spas Size Size Main unit: 180mm x 20mm Handle probe: 150 mm long Probe (only): 48 mm in length Cable (only): 300 mm in length Power supply: 1 x AA alkaline battery (1.5v) Bare machine weight: 193g B (without battery) Gross weight: 260g Note: The data is manual measurement, please allow 1-36cm error, due to differences between light and screen, there will be a certain color difference , the specific received in kind shall prevail.