Pocket Ph Meter Ph5011. These pocket pH meters are easy to use, giving fast, accurate and repeatable measurements of pH values. They have the unique feature of retractable electrode. The LCD display has large digits making it easy to read and the protective cap allows the inclusion of small sponge to keep the electrode moist to help prolong its life. Dimensions (L W D): 158 40 34mm. • to 14.0pH 0.1pH (MPH-5011)• to 14.00pH 0.01pH (MPH-5011A) • Impact-resistant ABS case • Splash-proof membrane keypad • Electrode can be extended up to 80 mm • Manual calibration via screw trim pot • Pocket clip moulded on the rear of the case • Supplied with electrode, protective cap, calibration screwdriver, 50 mL calibration solution and carry case • Powered by V PP3 battery (MPH-5011) or x 1.5 Lithium coin cells (MPH-5011A) (supplied)• Weight: 120 g• Warranty: months