This item is a excellent PH meter, which can simultaneously measure & display PH results. The will remain accurate for a long time without recalibration. Great for and laboratory PH testing including aquariums, swimming pools, and more. Features - Color: Yellow. - Material: Plastic and metal. - Size: 15 * 3cm. - and excellent meter, very accurate and . - Can simultaneously measure & display PH results - The will remain accurate for a long time without recalibration - Can be used in particularly conditions - Great for and laboratory PH testing including aquariums, swimming pools, and more. Specifications - Measuring range: pH 0.0 - 14.0 - Resolution: 0.1pH - Accuracy: ±0.1pH (at 20 degree centigrade/68 fahrenheit scale) - Typical EMC : ±0.2pH - Battery: 3*1.5v ( -13 ) - Operating temperature: 0 degree centigradeto 50 degree centigrade ( scale- 122 fahrenheit scale) - Relative humidity: ±95% - Life: Approx. 700 hours of use - Trimming: By potentiometer Package list: 1 * Digital PH Meter Tester Pocket Water Wine LCD Pen(Yellow)