[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 readings. It also has an upgraded large backlit LCD screen for easy readings. [Easy to Use] 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), pools and spas, commercial and industrial applications, and more! [Comprehensive Testing] Not only is it convenient, but it also saves you time and money, it is definitely a useful water quality testing kit for your water safety. [Note: The EPA recommends a TDS level of 500 ppm for drinking water.] ] Material: Plastic Measurement range: ph: 0-14 tds: 0-9990ppm ec: 0-9990us/cm Measurement accuracy: ph: 0.01 tds: 1 ec: 1 Power supply voltage: 3V Resolution: 0.01ph 1ppm Package contents: 1*Water quality tester