Description: The TDS Meter is an inexpensive and convenient digital tool for checking overall water quality instantly. TDS stands for Total Dissolved Solids, which is any salt, metal or mineral in water. With the push of a button, the TDS tester can determine the overall purity level of the water, which will be displayed on the LCD screen. The Electronic Color Tester is an effective sales tool that visually shows the difference between high TDS water and low TDS water. Very easy to use, quick testing, obvious results. The easiest and cheapest way to check water quality. Buy yourself a tool and check the condition of your drinking water. Characteristics: 1. Very easy to use, quick testing, obvious results. The easiest and cheapest way to check the water quality, see the condition of your drinking water. 2. The electronic color tester is an effective tool that visually shows the difference between high TDS water and low TDS water. 3. Automatic shutdown function. The meter automatically turns off after 10 minutes of non-use to save battery life. 4. Hold function. The TDS tester saves the measurements for convenient reading and recording. Large and easy-to-read LCD screen to display. 5. Great for testing salt, metal or mineral in water. The perfect tool kit for drinking water, water filtration and purification, hydroponics, aquariums, pools and spas and more. Specification: Material: plastic; Measuring range: 0-9999 Measurement accuracy: 0.01 Resolution: 0.01 Test Pen Size: Approx. 15.6 * 3 * 1.6cm / 6.1 * 1.2 * 0.6 inch Package Included: Approx. 245g The package includes: 1 * Water Quality Tester Kit