Fast Accuracy: The meter can get results quickly and accurately without using messy color charts or test strips. It has 0.01 resolution, 0.05 accuracy, can be fully measured in the pH range from 0 to 14, and the pH meter has been factory calibrated. Automatic calibration: The pH meter has an automatic temperature compensation function, which can be adjusted according to water temperature and water quality to obtain a pH reading almost immediately. Convenient Miniature: The handheld pen and compact case can be placed in a pocket or bag, and can be carried anywhere. temperature of the test liquid, so that it can accurately determine the pH of the sample at any which temperature in the range of 0C to 80C (32F to 176F), very convenient. Practical safety: Recommended chlorine content in swimming pools and spas: The pH value of swimming pools and spas is 1.2 to 1.7 ppm and the pH is 7.2 to 7.8 ph. The digital water quality monitor is an indispensable tool for quickly reading and accurately ph and chlorine, which can ensure your pool/spa water is safe, comfortable and non-corrosive. Widely Application: This pH meter is very suitable for various tasks, such as swimming pool, tap water, home brewing, laboratory testing, aquarium maintenance, etc. Electric tester for testing pH and chlorine levels (Cl2) in water. It is used to regularly monitor the pH and chlorine content of swimming pools, spas and various water sources.Features: Fast Accuracy: The meter can get results quickly and accurately without using messy color charts or test strips. It has a resolution of 0.01, an accuracy of 0.05, can be fully measured in the pH range from 0 to 14, and the pH meter has been factory calibrated. Automatic calibration: The pH meter has an automatic temperature compensation function, which can be adjusted according to water temperature and water quality to obtain a pH reading almost immediately . . Practical miniature: The handheld pen and the compact case can be placed in a pocket or bag, and can be carried anywhere. temperature of the test liquid, so that it can accurately determine the pH of the sample at any which temperature in the range of 0C to 80C (32F to 176F), very convenient. Practical Safety: Recommended chlorine content in swimming pools and spas: The pH value of swimming pools and spas is 1.2-1.7 ppm and the pH is 7.2-7.8 ph. The digital water quality monitor is an indispensable tool for quickly reading and accurately ph and chlorine, which can ensure your pool/spa water is safe, comfortable and non-corrosive. Specification: Product Name: Water Quality Tester Size: 15 x 7 x 20cm Material: plastic Powered by: 1 x AA battery (not included) Recommended for swimming pools and spas: chlorine 1.2-1.7 ppm, pH 7.2-7.8 Type of display: digital With backlight or not: no Include: 1 x pH and Cl2 tester with probe 1 x manual 1 x sandpaper