The invention relates to a matrix tablet for the prolonged release of gliclazide which ensures continuous and consistent release of the active ingredient after administration by the oral route, the release being insensitive to variations in the pH of the dissolution medium. With a combination weighing device, a plurality of containers placed on a rotary table are moved by rotatably driving the rotary table. The drive circuitry applies signals within a desired frequency range to lower input power while providing enhance output within a desired wavelength band, such as 365 nm to make use of an afterglow regime from an emissive medium within the lamp. A low-temperature non-equilibrium plasma area is formed between the grounding electrode and the high-voltage metal electrode.