General laboratory bench pH meter, which is suitable for measuring moderate ionic strength solutions, such as surface ... safety certification300 groupsMeasuring value series number, measuring value, temperature, ATC or MTC state, measuring date and timeDC9V/300mARS232160 × 190 × ... °C(0.001grade)≤75%IP54 Dustproof and waterproof 1. Meter meets with the requirement of international GLP standards. Its ...