【SUITABLE FOR】The 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 SCREEN】The 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 USE】The chlorine tester is simply to immerse the pH meter electrode into the solution and press the button to measure. Portable design, easy and convenient to use. High-precision design, with dial plate, easy to read. 【HIGH QUALITY】The spa chlorine tester is made of premium plastic shell, durable and sturdy. Specially designed for family swimming pools. 【PRACTICAL TOL】A practical tool for testing water pH and chlorine level for swimming pools and spas. Easy to use, you can quickly test whether the chlorine and PH are within 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 electric 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. Proper chlorine and pH levels keep bad bacteria away: If the pH is too high, the electricity that chlorine kills will be depleted. Chlorine can also be consumed when large amounts of nitrogen (feces, 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 to 1.7 ppm The recommended pH for pools and spas is 7.2 to 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) Weight (bare metal): 193g b (without battery) 1 pH and Cl2 probe tester 1 manual, 1 sandpaper, color box packaging