Easy and robust portable pH/mV meter for routine measurement - secure and reliable pH measurement due to repeatable results. The pH 3110 is the right choice for all who are looking for a simple meter for portable pH measurements. A clear keypad with only 6 keys and the automatic autoRead function for repeatable measured values make pH measurement safe and prevent errors. The anti-skidding keypad can be operated with gloves as well. The large display is clear and easy to read. Integrated calibration timer.