General description To check the quality of your water, whether from a tap, hot tub, home herbal tea, indoor soil, aquarium, hydroponics, or swimming pool, this 4 in 1 Digital pH Meter is an essential tool. It is small, lightweight, and easy to carry, making it convenient for outdoor use. Technical specifications Measurement range: 0.00 to 14.00 pH Resolution: 0.01 pH Accuracy: ± 0.01 pH Display: Blue backlit LCD Installation Remove the protective cap. Immerse the pH meter electrode in the solution. Press "ON/OFF" to turn on the device. Stir gently and wait a few seconds until the reading stabilizes. Usage The pH tester is ideal for testing the pH balance in drinking water, aquariums, swimming pools, spas, or hydroponic systems. It features a self-calibration function for quick and easy readings. Other information