1、PH and Chlorine: This water quality tester is specifically designed to test pH levels and chlorine content in swimming pools and spas. Recommended chlorine level for pools and spa is 1.2 to 1.7ppm. Recommended pH level for pools and spa is 7.2 to 7.8. 2、Large Screen: This water quality tester has a large screen displays the test result on pH and chlorine level for easy and accurate reading and it is the easiest way to determine the correct values. 3、Convenient to Use: This water quality tester is light weight and compact, easy to carry. With a hole for convenient hanging. Long cable gives you more flexibility in use. 4、Durable Material: This water quality tester is made of premium plastic shell, durable and sturdy. Suitable for home, swimming pool, spa and aquarium use. 5、Notice for Use: It is not including the battery, easy to operate, but when you use, you should see the manual, and if it is the sea water, it cannot tester, it is only test the pH levels and chlorine. Item Type: PH CL2 Tester Product Material: ABS Battery: 1 x AA Dry Battery(Shipped Without Battery) Tester Size: Approx. 115x170mm / 4.5x6.7in, Cable Length: Approx. 130cm / 51.2in Gross Weight: 205g/7.2oz 1 x Water Quality Tester 1 x Instruction Manual 1 x Abrasive Paper