Wide Usage PH Meter Hofun ph meter is an essential tool to improve your life quality. This digital ph tester can be applied in the following applications,drinking water quality test, swimming pools quality monitor, PH balance measurement in RO/DI system,aquarium, spa, hot tub or hydroponics. Reliable TDS Meter With Accurate & Quick Measurement Hofun digital ppm meter is equipped with premium quality titanium alloy probe, which enables quick and accurate water quality test. Easy Operation for Salinity Test: When you want to use our pool salt tester, all you need to do is to turn the meter ON and click button to shift to function. This easy and convenient operation design is very considerate and offers premiumexperience. Wide Application Salinity Meter: Hofun digital water salinity test meter applies for multiple uses, like salt water test for swimming pool, Koi Fish, Seawater, Aquariums & Marine Monitoring. Multiparameter water Test meter is equipped with 5 different functions for water quality test: Salinity + TDS + EC + pH + Temperature are combined perfectly in one meter. This is not only been convenient for your different water testing needs, but alsosaves your time and money, totally a helpful water test kit for your water quality safety.