4-in-1 pH Meter, pH Meter Tester, pH Tester, pH Meter with LCD Display, High Precision Resolution 0.01, Swimming Pool pH Meter

4-in-1 pH Meter, pH Meter Tester, pH Tester, pH Meter with LCD Screen, High Precision Resolution 0.01, Swimming Pool pH Meter 【4 in 1】For checking the quality of your water, whether it comes from a faucet, hot tub, homebrew, indoor soil, aquarium, hydroponic system, or swimming pool. In addition, the pH test pens are small, lightweight, and easy to carry when you're on the go. 【High Accuracy】The pH meters range from 0.00 to 14.00 (PH). The pH resolution is 0.01 pH, the accuracy is ±0.01 pH, and the blue backlit LCD display ensures reliable and fast readings. 【EASY CALIBRATION】The pH tester calibrates automatically in three points. No tools are required; 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 for the reading to stabilize. 【EASY TO USE】The pH tester has a self-calibration function, so you can quickly obtain a reading. 【Wide Applications】A single calibration powder can be easily stored in a drawer, bag, or suitcase for easy transport. It is ideal for testing the pH balance in drinking water, aquariums, swimming pools, spas, or hydroponics.