Potentiostat

A potentiostat is an instrument designed to control the electrodes Electrode in an electrochemical system Electrochemical System by adjusting the potential Potential (or current) Current and measuring the subsequent effect on current (or potential).  This task is accomplished through a variety of internal circuits, operational amplifiers, and feedback loops.  External cables are used to physically connect to each electrode, which typically includes a working electrode, Working Electrode a counter electrode, Counter Electrode and a reference electrode. Reference Electrode

 

A bipotentiostat is a special type of potentiostat that can control two distinct working electrodes simultaneously, along with a counter electrode and a reference electrode.