C-600 is the latest multi-functional water quality tester developed in 2020, with 7 functions and one product for multiple uses. It can measure PH / TDS / EC / ORP / seawater specific gravity / temperature. The measurement range is large and wide and can measure freshwater salinity and sea salt. It is suitable for home, swimming pool, drinking water, and amazing digital water quality monitor for aquarium. RCYAGO products walk with you to make life better.