Pool ±0.01 High Accuracy PH Tester for Hydroponics PH Meter Aquarium 4 in 1 Digital PH Meter with pH/TDS/EC/ATC Function for Drinking Water <p>With&nbsp;4 in 1 pH tester, you can accurately measure PH, TDS, EC and Temp values. Comprehensive water quality testing to ensure we can use healthy water.</p> <p>Simply immerse the pH meter electrode into the target solution, press and hold the HOLD/TEMP button after the reading is stable, and then read the data. Before using the pH meter again, please clean the probe thoroughly to avoid affecting the reading.</p> <p>With the highly sensitive probe, you can quickly read the results. The wide measuring range and high resolution of this 4-in-1 pH meter ensure that you can measure different types of liquids.</p> <p>Thanks to the pH meter's precise ATC, the pH/TDS/EC/Temp function can accurately read sample values over a wide temperature range from 32°F to 140°F. Effectively solve the problem of inaccurate measurements caused by liquid temperature changes.</p> <p>&nbsp;The water quality tester uses an advanced LCD backlit display design, which makes readings easier and clearer. The data is clearly visible even in the dark.</p> <p>This digital pH tester helps you know the water quality for drinking, bathing, a cup of salt water, swimming pools, etc. The digital pH tester also helps you get a clear overview of nutrient levels in hydroponic setups, garden soil, etc.</p> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.