Recommended chlorine content in swimming pools and entertainment areas: The pH value of swimming pools and spas is 1.2 to 1.7 ppm and the pH value is 7.2 to 7 .8ph. The digital water quality monitor is an indispensable tool for quick and accurate pH and chlorine readings. It can ensure that your pool/spa water is safe, comfortable and non-corrosive. Multimeters can get fast and accurate results without the need for messy color charts or test strips . It has a resolution of 0.01 and an accuracy of 0.05, and can be fully measured in the pH range of 0 to 14, and the pH meter has been factory calibrated. The water quality pH tester has an automatic temperature compensation function, which can be adjusted according to the temperature and water quality, and the pH value can be obtained almost immediately . Ideal for keeping swimming pools or hot springs within a safe chlorine and pH range without using other chemicals. This digital pH meter is very suitable for various tasks, such as swimming pool, running water, home brewing, laboratory testing, aquarium care, etc. Electric tester for testing pH and chlorine (Cl2) in water. It is used to regularly monitor the pH and chlorine content of swimming pools, spas and various water sources. The digital water quality tester is lightweight and portable. Hand pens and compact pen bags can be stored in a bag or bag and can be carried. Since the pH meter has a built-in automatic temperature compensation (ATC) function, it is no longer necessary to pay attention to the temperature of the test liquid, so that the pH value of the sample can be accurately determined at any temperature from 0C- . 80C (32F-176F)