Combined digital pH and TDS meter, pH tester with 0.05 pH accuracy and high precision +/- 2% reading accuracy. TDS tester, water quality tester for drinking water / swimming pools / aquariums / swimmi

【4-in-1 Set】 A very complete set for checking water quality, whether from tap water, regeneration systems, aquariums, or swimming pools. The digital pH and TDS meters are small and lightweight, like a pen. They are easy to carry and fit neatly in your pocket when you're out and about. 【Easy to Use】 The TDS water tester locks the measurement result when you press the "HOLD" button and automatically shuts off after a few minutes of inactivity. The pH meter has an automatic calibration function, and you can get a reading quickly. 【High Accuracy】: The pH meter displays readings from 0.00 to 14.00 (pH), while the EC and TDS digital meters display readings from 0 to 19990 ppm. The pH resolution is 0.01 pH, with an accuracy of ±0.05 pH. TDS: 0 ~ 9990 ppm, conductivity: 0 ~ 9990 µS/cm, accuracy: ±2%, reliable and fast measurements. 【Simple Calibration】: The pH meter automatically calibrates at three points (6.86-point calibration only: accuracy to 0.1 pH). No tools are required; simply remove the protective cover and immerse the pH meter electrode in the solution. Press "ON/OFF" to turn on the electronic pH meter, gently shake it, and wait a few seconds until the readings stabilize. 【Package Contents:】 1) One TDS-EC measuring device tester. 2) One pH tester. 3) 3 pH calibration bags. 4) Use the instructions. A well-made kit with a clearly visible LCD screen. Product Description: Professional sets with multifunctionality. They can be widely used for many water quality testing applications: pure water production and consumption, tap water, well water, seawater, aquarium water, swimming pool water, early amniotic fluid rupture, etc. 3-in-1 TDS/EC temperature measuring device. Leveling with a large LCD screen for easier reading. High-precision measuring range from 0 to 9990 PPM. Automatic shut-off after 10 minutes of inactivity. Automatic Temperature Compensation (ATC). The (HOLD) button locks the test result. No calibration required: the TDS meter was calibrated at the factory. Features: The sensitive electrode sensor's measuring range is between 0.00 and 14.00 pH. A (CAL) button calibrates the measuring device. Large display; data is clearer than before. Automatic shut-off after 9 minutes of inactivity.