PH Meter Widely Used Hofun pH meter is an essential tool to improve your quality of life. This digital pH tester can be applied in the following applications, drinking water quality testing, swimming pools quality monitor, pH balance measurement in RO/DI system, Aquarium, spa, hot tub or hydroponics. Three display models for salinity test: PPM + PPT + %. For swimming pool salt test: 0-9999ppm; Seawater test: 10-200ppt (1ppt=1000ppm, when the ppm figure is above 9999ppm, the meter automatically changes to ppt). For food testing: 0.01-25%. So you don't have to calculate complex salt content level numbers between different units, which helps you avoid the calculation error and also makes reading the results easier for you. Easy Operation for Salinity Test: When you want to use our pool salt tester, all you need to do is turn on the meter and click MODE button to switch to SALINITY function. This easy and convenient operation design is very considerate and offers premium experience. Wide Application Salinity Meter: Hofun digital water salinity test meter is applicable for multiple uses, like salt water testing for swimming pool, Koi fish, sea water, aquariums & Marine monitoring. Reliable TDS Meter with Accuracy & Quick Measurement Hofun digital ppm meter is equipped with premium titanium alloy probe, which enables fast and accurate water quality testing. Our water quality tester is with 0-9999ppm & 0-200ppt Wide test range ensures different function of use. Hofun multi-parameter water tester is equipped with 5 different functions for water quality testing: Salinity + TDS + EC + pH + Temperature are perfectly combined in one meter. It is not only convenient for your different water testing needs, but also saves your time and money, totally a useful water testing kit for your water quality safety.