he potential wave form for square wave voltammetry (SWV) is shown in Fig10 and the Change Parameters dialog box is shown in Fig11. The potential wave form consists of a square wave of constant amplitude superimposed on a staircase wave form. The current is measured at the end of each half-cycle, and the current measured on the reverse half-cycle (ir) is subtracted from the current measured on the forward half-cycle (if). This difference current (if - ir) is displayed as a function of the applied potential.