[SPEED & ACCURACY] Features the latest sensor and probe technology to deliver fast, accurate readings in seconds. Get instant results with just 1 inch of water. Equipped with a large backlit LCD for easy viewing in low light. [EASY TO USE] This 3-in-1 handheld digital TDS meter provides quick and reliable water quality testing. Compact design with included case allows for convenient portability. Ideal for monitoring drinking water quality anytime, anywhere. [MULTIPURPOSE USE] A versatile tool for testing water quality in various applications including drinking water, reverse osmosis (RO) systems, deionization (DI) systems, aquariums, hydroponics, pools, spas, and industrial uses. [3-IN-1 MEASUREMENTS] Measures TDS, EC, and temperature with a single device. Combines multiple testing functions into one compact unit, saving time and effort. A practical solution for maintaining water safety. [NOTE: EPA recommends TDS levels in drinking water be below 500 ppm.] [AUTO-OFF AND HOLD FUNCTION] Automatically powers down after 2 minutes of inactivity to preserve battery life. Includes hold function to freeze readings for easy viewing and recording. Color: White Material: Plastic Package Contents: 1 x Water Quality Tester Note: Light reflection and display differences may cause slight variation in color appearance. Measurement error allowance is +/- 1-3 cm.