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The basic principle of PH electrode

For measurement of the PH electrode is also known as Primary battery. Primary battery is a system; its role is to make the chemical energy into electricity. The battery voltage is called the electromotive force (EMF). The electromotive force (EMF) consists of two half cell. One and a half cell called measuring battery, its potential is associated with specific ion activity; another one and a half in reference battery, often referred to as the reference electrode, it is general and measuring solution are interlinked, and connected to the measuring instrument.
PH electrode made by plane glass ball bubble, high pollution resistance and resistant to impact.