A fast dropping oil \ water electrode with a small drop was constructed by dropping an aqueous electrolyte from a double capillary into a nitrobenzene phase. aiming at performances similar to microelectrodes. The double capillary tvas a combination of a thin capillary supported by the obliquely grounded capillary. This system produces drops with 0.07 s drop time and 0.8 mm radius. The voltammograms were obtained at the interface between the nitrobenzene + tetrabutylammonium tetraphenylborate (supporting electrolyte) and a LiCl aqueous solution. The current was ascribed to the charging of the interface rather than the ion-transfer because of the fast variation of the interface area. The differential capacity versus potential curves are in agreement with the literature curve.