User`s guide

Electrochemistry 15
Agilent 5500 SPM User’s Guide 217
Reference Electrode
The reference electrode (RE) should have a diameter of 0.51 mm
(0.02 in). It will sit within the electrolyte but will not contact the
working electrode (sample).
Figure 148 Reference electrode
Counter Electrode
The counter electrode (CE) is typically made from platinum-iridium
wire (Figure 149). It should encompass as much of the inner rim of the
liquid cell as possible. It may be useful to make the diameter of the
electrode slightly larger than the diameter of the cell, so that the
electrode will hold itself in place against the walls of the cell.
Figure 149 Counter electrode