These handy and ergonomically designed portable meters are ideal for anyone working on a low budget and still requires fast and reliable measurements. These portable meters are suitable for a wide range of applications, such as Educational, Agriculture and Horticulture, as well as water and environmental analysis. These easier and faster to calibrate portable meters have a smaller, ergonomic and lighter case design. Other features include 100 percent larger and easier to read LED Display and long battery life. MW100 are supplied complete with a MA911B/1 pH electrode, pH 7.01 20ml sachet of calibration solution, calibration screwdriver, 9V battery and instructions. Range: 0.0 to 14.0 pH. Resolution: 0.1 pH. Accuracy at 25 degree C: +/-0.2 pH. Temperature Compensation: manual, 0 to 50 degree C. Calibration: manual, 2-point through offset and slope trimmers. pH Electrode: MA911B/1 (included). Environment: 0 to 50 degree C, max RH 95 percent. Battery Type: 1 x 9V alkaline (included). Battery Life: approximate 300 hours of use. 145mm length by 80mm width by 40mm height.