💧【4 in 1】To check the quality of your water, whether from a tap, hot tub, home herbal tea, indoor soil, aquarium, hydroponics or swimming pool. In addition, the PH meter pens are small in size, lightweight and easy to carry. take it when you go out. 💧【High Accuracy】PH meters range from 0.00 to 0.00 14.00 (PH). The pH resolution is 0.01pH, accuracy ±. 0.01 pH, Blue backlit LCD display for fast and reliable readings. 💧【EASY À CALIBRATION: The pH meter automatically calibrates at three points). You don't need any tools; Simply remove the protective cap and immerse the pH meter electrode in the solution. Press "ON/OFF" to turn on the electronic pH meter, stir gently and wait a few seconds until the pH meter is ready. until the reading stabilizes. 💧【EASY À USE: The pH tester has a self-calibration function so you can get a reading quickly. easy. It is ideal for testing the pH balance in drinking water, aquariums, swimming pools, spas or hydroponic systems.