The Everpure EV650020 Digital Pocket TDS Meter is an essential tool for accurate water quality testing. It measures total dissolved solids (TDS) in a range from 0 to 9990 ppm, ensuring precise readings for various applications. The meter also features a temperature reading capability from 32°F to 176°F, allowing you to monitor water conditions effectively. Its convenient "hold" function lets you freeze the display for easy reading, while the included soft case provides protection and portability. Ideal for home, laboratory, or field use, this compact meter combines functionality with ease of use.