General description To check the quality of your water, whether it comes from a faucet, hot tub, home brew, indoor soil, aquarium, hydroponics, or swimming pool, this 4 in 1 pH meter is an essential tool. It features a high accuracy resolution of 0.01 pH and is compact and lightweight, making it easy to carry when you go out. Technical specifications Measurement range: 0.00 to 14.00 pH Resolution: 0.01 pH Accuracy: ±0.01 pH Display: Blue backlit LCD Installation No tools required for calibration; simply remove the protective cap and immerse the pH meter electrode into the solution. Usage Press "ON/OFF" to turn on the electronic pH meter. Stir gently and wait a few seconds until the reading stabilizes. Self-calibration function for quick readings. Other information Ideal for testing pH balance in drinking water, aquariums, swimming pools, spas, or hydroponics. A single calibration powder can be easily stored in a drawer, bag, or suitcase for easy portability.