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. Range – Large screen displays test result on pH and chlorine level for easy and accurate reading. Chlorine level within the safety measurement range: 1.2-1.7 ppm. pH level within the safe measurement range: 7.2-7.8. Application – This tester is for testing water pH and chlorine level for swimming pool, saunas, the aquarium and the spa. Ideal for home drinking, pond, etc. Material – This tester is made of premium plastic shell, which is durable and sturdy. Battery: 1 “AA” alkaline battery 1.5V (not included). Storage method - 1.When not in use, please turn the knob to the off position (clockwise). PH until it can