SUITABLE FORThe CL2 tester is suitable for swimming pool, spa, hot tub, etc. It is NOT recommended to immerse the probes in any liquid other than pool or spa water. Recommended chlorine level for swimming pool and spa: 2-1.7 ppm and 7.2-7.8 ph for pH level for swimming pool and spa. LARGE SCREENThe water quality analyzer can quickly and accurately measure ph and CL2. The large screen displays the test result on pH and CL2 for easy and accurate reading. EASY TO USEThe chlorine tester is simply to immerse the pH meter electrode into the solution and press the button to measure. Portable design, easy and comfortable to use. High-precision design, with dial plate, easy to read. HIGH QUALITYThe spa chlorine tester is made of premium plastic shell, durable and sturdy. Specially designed for family swimming pools PRACTICAL TOLA practical tool for testing water pH and chlorine level for swimming pool and spa. Easy to use, you can quickly test if the chlorine and PH are in the ideal range. The ideal tool for quickly and accurately measuring pH and chlorine to keep your swimming pool or spa within a safe chlorine and pH range. An electrical pH and chlorine (Cl2) level tester for routine monitoring of pH and chlorine levels in swimming pools, spas and various water sources. When chlorine and pH are out of whack, it can lead to diarrhea and ear and skin infections. Good chlorine and pH keep bad bacteria away: If the pH is too high, the electricity that chlorine kills will run out. Chlorine can also be consumed when large amounts of nitrogen (excrement, urine, sunscreen, or sweat) or other organic matter enter the pool. This is why chlorine and ph are tested. Note: It is not recommended to immerse the detector in water other than pool or spa water. Specification: The recommended chlorine level for pools and spas is 1.2-1.7 ppm. The recommended pH for pools and spas is 7.2-7.8. Size: Main unit: 190 mm x 20 mm. Handle probe: 150 mm long. Probe (only): 48 mm long. Cable (only): 300 mm long. Power supply: 1 AA alkaline battery (1.5 V). Bare metal weight: 193 g (without battery). 1 ph and Cl2 probe tester. 1 manual, 1 sandpaper, color box packaging.