Measuring range: 0.00-14.00 pH. Temperature compensation range: 0.0-50.0 degrees. Accuracy: 0.01 Function: pH value detection, voltage detection, temperature detection, instrument calibration, latch function, low voltage spike. Pocket-sized, durable, and long battery life. Applications: Laboratory, Industry, Wastewater Treatment, Scientific Research, Pharmaceuticals, Electroplating Solutions, Tap Water, Aquaculture, Drinking Water, Enzymes, Well Water, Seawater, Boiler Water, Aquarium Water, Swimming Pool Water, Photo Processing, Ink, Food Processing , ionized water, home water quality testing, physical and chemical education, cosmetics, pH value of human urine. Great gift for relatives, friends, neighbors and loved ones.