Milwaukees low cost durable meters for quick and reliable measurements. Milwaukees Smart meters are manufactured to be easy to use, practical and accurate. Ideal for the classroom, laboratory or for general field use. Theres a model to fit a range of specifications. All models are supplied complete with a professional electrode/probe, calibration solution, a 9V battery, instruction manual and screwdriver for calibration. Specifications: Range ± 1000mV Resolution 1 mV Accuracy ± 5 mV Battery type/life 1 x 9V / 300 hours Environment 0 Ð 50¡C/95% RH Max Dimensions 80 x 145 x 35 mm Affordable ORP meter with platinum electrode Quick and accurate measurements Battery operated Large and easy to read display