[SPEED & ACCURACY] Integrated with the newest sensor and durable probe, let you get data in seconds. Just stick it in about 1 inch of water instantly you get the reading. Also upgraded with big backlit LCD make reading easier! [EASY TO USE] Our 3-in-1 TDS meter is an easy-to-use a hand-held digital meter to instantly check your overall water quality. It allows you to stay on top of your drinking water quality at all times! A compact design with a case bonus can let you take it anywhere you need [MULTIPURPOSE & MUST-HAVE FOR DAILY LIFE] Worry about water quality? The TDS meter is a great water quality test tool for drinking water, water filtration and purification systems such as RO systems or DI systems, aquariums, hydroponics (test nutrients), pools and spas, commercial and industrial applications, and more [INTEGRATED 3 TEST, TDS EC & TEMP] Three different measurement needs can be fulfilled by one water tester meter. Not only be convenient for you, but also saves your time and money, absolutely a helpful water test kit for your water safety at home. [NOTE: EPA suggests that the TDS of drinking water should be below 500 ppm] [AUTO-OFF AND HOLD FUNCTION] The TDS tester shuts off automatically after 2 minutes of non-use to conserve batteries. Features a hold function that saves measurements for convenient reading and recording Colour:White Material:plastic Package Contents: 4 x Water Quality Tester