Measuring RangeA 5 in 1 water quality tester that accurately measures salinity/TDS values /EC/temperature/SG. The conductivity of water quality tester: 0.055us/cm with a measuring range of 0-1000ppm; Measuring range in Celsius: 0.1 to 80.0 C/ (32.0 to 176.0 ) Accurate measurement The digital water tester has sensitive electrode sensors for precise measurement; with an LCD screen for easy reading of your data and a backlight for use in the dark Easy to UseSimply insert the water detector probe into about 1 inch of water and you will get a reading immediately. It is compact and maintenance-free; do not move during use and wait for a stable measurement. Small air bubbles may affect the accuracy of the sensor Wide range of applications Salinity meter for measuring drinking water, reverse osmosis system, spa, soap mixture, food, wine, beer or any other liquid; Widely used in swimming pools, aquariums, reverse osmosis systems, spas or hydroponics Quality Assurance We are committed to providing quality products and thoughtful services. If you have any questions during the purchasing process, please feel free to contact us, our team will answer your questions within 24 hours.