2 Pack pH Meter and TDS Meter, 0.05 pH High Accuracy Tester Pen, ± 2% Readout Accuracy Digital Water Quality Filter Pen, 0-9990ppm, Ideal Water Purity Test for Drinking Water, Aquariums, Hydroponics
- ...uble salt content, ionic organic matter, etc. in water, displayed on the screen in ppm (parts per million). extremely accurate and reliable, quick response within 3 seconds..
- 【Accurate and Reliable】- To achieve high accuracy, TDS meter equipped with premium quality titanium alloy probe, pH tester has a sensitive electrode sensor ,simply press "ON", It only takes a few seconds for your result to appear on screen to read accurate pH levels..
- 【Multifunctional and Upgraded】- Professional TDS, pH Pen. Upgraded with big LCD for easier reading, and hold-lock function for easier use. Just turn TDS meter on and stir water gently, then stabilized readings will be hold-locked on LCD in seconds, and the tds ppm meter will shut off automatically if without operation over 5 minutes..
- 【How to use calibration】- Press CAL for 5 seconds to enter the calibration mode, press in turn to select the powders corresponding to 6.86, 4.01, and 9.18 to complete the calibration. pH meter has been calibrated before delivery, the buyer does not need to re-calibrate after receiving the goods, In the following cases, the pH meter must be re-calibrated: Has been used for a long time after calibration.
- The measurement accuracy requirements ar....