Wide Application The Water Quality Tester is widely used in the water treatment industry, drinking water industry, swimming pools, hot tubs, spas, aquariums, ponds, hydroponics, tanks, and more. It provides a versatile solution for monitoring water quality across settings. MultiFunction Water Quality Measurement This Digital Water Quality Meter is more than a salinity meter. It also functions as a TDS Meter and a Temperature Meter, giving you a single tool to assess key water quality parameters. Easy to Use Simply insert the probe into the water and you will see results immediately. The probes respond instantly and the reading is displayed for quick confirmation. Accuracy and Readability Designed for drinking water testing, this Digital Salinity Meter offers sensitivity and fast results in seconds. The display is easy to read, and the unit includes automatic temperature compensation to improve accuracy across varying temperatures. Use Scenarios Aquarium and pond maintenance: regularly check salinity, TDS, and temperature to maintain a healthy aquatic environment for fish, plants, and other inhabitants. Hydroponics and nutrient solutions: monitor salinity and TDS to optimize nutrient availability and plant growth. Pool, hot tub, and spa management: verify water quality and safety by measuring key parameters and ensuring comfortable, safe conditions.