A process for producing an electrode for high-pressure discharge lamps, at least the discharge-side section of the electrode being produced from a prefabricated tungsten wire, which is shortened to the required length during the production process of the electrode and subjected to an annealing process as well as being mounted on other components of the electrode that may be present. The mixture is then heated to reduce the metal precursor to a metal precipitate. The fluid may comprise a therapeutic or prophylactic agent. A seal ring wetting layer is also formed on the substrate, the seal ring wetting layer surrounding the active MEMS region.