Introduction:This digital pen style PH meter is an ideal instrument for any aquarium, the fishing industry, swimming pools, school laboratories, food & beverage, etc. And, this Digital TDS Water Quality Tester is ideal for all basic water testing applications. This product is highly efficient and accurate due to its advanced microprocessor technology.Applied range: the production and drinking of purified water, Electroplating liquid, Boiler water, Water in fish tank, Water of swimming pools, Photograph flushing fluid, Well water, Deep phreatic water, Laboratory, Aquaculture, Food processing, etcFeatures:With compact portable designExcellent PH meter, very accurate and durableThis digital pen style pH meter is an ideal instrument for whatever you may need to test the pH levelsLCD display screen: Big LCD display screen which has great waterproof performance and let you easily read the displayed valueSpecifications:Display: LCD DigitalMeasure Range: 0.00-14.00pHResolution: 0.01pHAccuracy: 0.05pHPower Supply: 2 * 1.5V LR44 Batteries(Keep using more than 500 hours) Operating Temperature: 0~80Calibration: Two points automatic calibrationSize of Digital PH Meter: L*W*H/155mm * 30mm * 14mm/6.11" * 1.18" * 0.55"