The effect of 3, 6-dimethylamino-dibenzopyriodonium edetae(IHC-72) on the slow calcium channel of isolated rabbit purkinje fibers was studied with two microelectrode voltage clamp technique.
If plastic is dragging on the clamp frame, slow down the BFI rate or the closing speed of the respective platens. If touching the side heater make sure the heaters are not bent.