Newest TDS Meter Digital Water Tester Water Test Pen Water Quality Analysis Monitor Water Purity Check 0-9999 ppm Measurement 50%off    Feature:   1. LCD display, high-definition display clearly display, easy to read the value.   2. It can be used such as water purifier testing, tap water testing, aquaculture testing, including plant breeding,                 aquaculture, and so on.   3. Titanium alloy probe, anti-rust sensitive value is accurate and free from magnetic interference.   4. The buttons are easy to understand and durable, and the functions are convenient. After tens of thousands of button     tests, they are durable.   5. It does not take up space and is convenient to carry around.      Specification:   Color: White   Material: ABS material   Measuring range: 0~9990ppm   Measurement accuracy: ±2%   Power supply voltage: 5V   Product size: 15.0 x 2.80 x 1.5cm   Battery: CR2032 button battery*2(not included)      Packing:   Water quality test pen*1