[Speed and Accuracy] Integrates the latest sensors and durable probes to provide you with data in seconds. Just immerse in about 1 inch of water for instant reading. It also has an upgraded large backlit LCD screen for easy reading. [Easy to use] It is an easy-to-use handheld digital meter that instantly checks your overall water quality. It allows you to track the quality of your drinking water at any time [Versatile and Essential] Worried about water quality? This is an excellent water quality testing tool for drinking water and purification systems (such as syringe or DI systems), aquariums, hydroponics (nutrient testing), swimming pools and spas, commercial and industrial applications, and more! [Comprehensive Testing] It is not only convenient, but also saves you time and money, it is definitely a useful water quality testing kit for your water safety. [Note: EPA recommends a TDS content of 500 ppm for drinking water. ] Material: Plastic Measuring Range: 0-9990ppm Measuring Accuracy: 1 Power Supply Voltage: 3V Resolution: 1PPM Package Contents: 1*Water Quality Tester