A solid-state reference electrode has been constructed and tested. Experiments have shown that the reference electrode gives a negligible and constant contribution to the measured EMF. The solid-state reference electrode was used as a reference electrode for an Orion Fluoride (F-) selective electrode. This cell behaves satisfactorily compared to an Orion F--combination electrode. The first promising progress has therefore been made toward realization of a new solid-state reference electrode.