[FAST & ACCURATE] Integrated with the latest sensor and durable probe, allowing you to get data in seconds. Just about 2.5 cm of water directly, and you will get the reading. In addition, upgraded with a large backlit LCD that makes reading easier! [EASY TO USE] Our 3-in-1 TDS meter is an easy-to-use handheld digital meter to instantly check your total water quality. It allows you to keep track of your drinking water quality at all times! A compact design with a carrying case allows you to take it with you wherever you need it. [VERSATILE & A MUST-HAVE] Worried about water quality? The TDS meter is an excellent tool for testing water quality for drinking water and purification systems such as systems or DI systems, aquariums, hydroponics (nutrient testing) pools and spas, commercial and industrial applications, and more. [INTEGRATED 3 TESTS, TDS EC & TEMP] Three different measurement needs can be met by one water tester. Not only convenient, but also saves time and money, absolutely a useful water test kit for your water safety. [NOTE: EPA suggests that the TDS of drinking water should be 500 ppm] [AUTO-OFF AND HOLD FUNCTION] The TDS tester automatically shuts off after 2 minutes of inactivity to save batteries. Features a hold function that saves measurements for convenient reading and recording Color: White Material: Plastic Package Contents: 1 * Water Quality Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.