[SPEED & ACCURACY] Integrated sensor and durable probe provide fast and accurate readings in seconds. Get results instantly with just 1 inch of water. Features a large backlit LCD for easy reading in any lighting condition. [EASY TO USE] This 3-in-1 handheld digital TDS meter offers quick and reliable water quality testing. Monitor your drinking water quality anytime, anywhere. Compact design includes a protective case for portability. [MULTIPURPOSE USE] Ideal for testing drinking water, water filtration and purification systems, aquariums, hydroponics (nutrient testing), pools, spas, and various commercial and industrial applications. [3-IN-1 MEASUREMENTS] Measures TDS, EC, and temperature with a single device. Convenient all-in-one solution for comprehensive water testing. [NOTE: EPA recommends TDS level of 500 ppm or lower for drinking water.] [AUTO-OFF AND HOLD FUNCTION] Automatically powers off after 2 minutes of inactivity to extend battery life. Hold function locks the reading 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 between the product color in images and actual item. Measurement error allowance is +/- 1-3 cm.