[SPEED & ACCURACY] Integrated with the latest sensor and probe, delivers readings in seconds. Provides instant results in approximately 1 inch of water. Upgraded with a large backlit LCD for easy reading. [EASY TO USE] Our 3-in-1 TDS meter is a handheld digital meter for instant water quality testing. Helps monitor drinking water quality. Compact design includes a protective case for portability. [MULTIPURPOSE USE] Ideal for testing drinking water, water filtration and purification systems, aquariums, hydroponics, pools, spas, and commercial or industrial applications. [THREE MEASUREMENTS: TDS, EC & TEMPERATURE] One device measures total dissolved solids (TDS), electrical conductivity (EC), and temperature. Saves time and money. [NOTE: The U.S. EPA recommends that TDS levels in drinking water remain below 500 ppm.] [AUTO-OFF AND HOLD FUNCTION] Automatically powers off after 2 minutes of inactivity to conserve battery life. Hold function freezes the display for convenient reading and recording. Color: White Material: Plastic Package Contents: 1 × Water Quality Tester Note: Light reflection and screen variations may cause slight color differences between the image and the actual product. Measurement tolerance: ±1–3 ppm.