Gamry Instruments Interface 1000 Operator's Manual page 53

Chapter 7: Stability in Potentiostat Mode--Improving Potentiostat Stability
Provide a high-frequency shunt around the cell. A small capacitor between the red and white cell

leads allows high-frequency feedback to bypass the cell. (See Figure 7-2.) The capacitor value is
generally determined by trial and error. One nF (1000 pF) is a good starting point.
In a sense, this is another form of an AC-coupled low-impedance reference electrode. The counter
electrode is the low-impedance electrode, eliminating the need for an additional electrode in the
solution.
Red
White
Green
Figure 7-2
High Frequency Shunt
100 pF to 10 nF
Reference
Working
7 - 3
Counter