4 in 1 pH Meter Tester in 1 Digital PH Meter pH Meter with LCD Display High Accuracy 0.01 Resolution Water Quality Tester for Drinking Water <p>【High Accuracy】The pH meters range from 0.00 to 14.00 (PH). The PH resolution is 0.01 pH, accuracy ±0.01 pH, blue backlit LCD display for reliable and fast readings.</p> <p>【PH Meter】A very complete kit to check the quality of your water, whether it comes from a faucet, hot tub, home brewing water, indoor soil, aquarium, hydroponics or swimming pool. In addition, the PH test pens are small, lightweight, easy to carry when going out!</p> <p>【EASY TO CALIBRATE】The pH tester calibrates automatically at three points). You don't need any tools; just remove the protective cap and immerse the pH meter electrode into the solution. Press "ON/OFF" to turn on the electronic pH meter, stir gently and wait a few seconds until the reading stabilizes.</p> <p>【EASY TO USE】The pH tester has a self-calibration function so you can get a reading quickly.</p> <p>【Wide Applications】The pH tester can be easily stored in a drawer, bag or suitcase for easy portability. It is ideal for testing the pH balance in drinking water, aquariums, swimming pools, spas or hydroponics.</p>