The waterproof ph-meter not only can you check the water safety in daily life, but the tds meter is also vital for controlling R/O and DI water purifiers.Very effective in the growth of aquatic organisms such as fish and aquatic plants.Wide range of uses, for example, ph-measuring instrument for food, soil ph-measuring instrument, water grade ph-measuring instrument, aquarium ph-measuring instrument, hospital, home, laboratory, tetraph, water quality inspection kit, saltwater ec measuring instrument, hydroponics, tropical fish breeding, aquariums, fishing, pool water quality inspection ph, laboratory drinks, saliva, enzymes, cosmetics, soil acids Gauge, aquarium, reverse Ideal for testing penetration systems, spa pH balance, wine, beer production and moreIt is called a small, high-performance ph-meter that can be carried at any time.