Abstract: A quick change electrode assembly for immersion in an electrolytic fluid includes an electrode disc frictionally mounted in a TFE fluorocarbon plug disc holder in a sealed interference fit. Part of the disc holder is selectively assembled in and sealed to a PCTFE adaptor. The adaptor is threadedly mounted on the lower end of a spindle. A contact stud is removably secured on the spindle and extends into the plug disc holder. A coil spring is secured at one end to the contact stud and engages the electrode disc at its other end to complete a conductive path therebetween. The electrode disc may selectively be removed by a tool kit from the unassembled disc holder and quickly replaced with a new electrode disc. The disc holder may then be reinstalled on the adaptor, with the coil spring making a reliable electrical connection with the new electrode disc.

Abstract: An electrode, particularly a miniature electrode, having structural integrity and reliable electrical operation results. A thin fluoroplastic liner, preferably, a TFE fluorocarbon liner, seals an electrode disc core to a PCTFE fluoroplastic shroud. By properly machining and assembling the electrode disc core, TFE fluorocarbon liner and PCTFE fluoroplastic shroud, a fluid tight interference seal is obtained to avoid the electrolytic fluid leaking into the electrode to corrode the conductive electrical path. A stainless steel spring extends between the electrode disc core and an electrode contact in the PCTFE fluoroplastic shroud to complete the conductive path through the electrode. The spring has two flat ends which are held in reliable surface contact with the disc core and the electrode contact by the bias of the spring itself. The spring thus provides a reliable electric connection with good conductivity.