PH/CL2 Water Quality Tester – This water quality tester is designed to test pH and chlorine level for swimming pool and spa. A large screen quickly displays the test result with high accuracy. Lightweight and compact, easy to carry. Tips: When measuring the chlorine value, you need to match the 1.5 PPM CL value standard solution, which is not included in the packing list. Measurement range – Large screen displays pH and chlorine level test result for easy and accurate reading. Chlorine level within the safety measurement range: 1.2-1.7 ppm. pH level within the safe measuring range: 7.2-7.8. Application – This tester is for testing water pH and chlorine level for swimming pool, saunas, aquarium and spa. Ideal for home drinking, pond, etc. Material – This tester is made of premium plastic shell, which is durable and sturdy. Battery: 1 x 1.5V AA Alkaline battery (not included). Storage method - 1.When not in use, please turn the knob to the off position (clockwise). PH until it can