Abstract: Disclosed is a plasma device including at least two plasma cells, and a command unit, wherein the first and the second electrodes of a given plasma cell are independent from the corresponding first and second electrodes of the contiguous plasma cells. The electrodes of contiguous plasma cells are independently connected to the command unit. The command unit includes a high voltage generator and a radiofrequency generator which are mutually protected by a filtering element.

Abstract: Disclosed is a plasma device including at least two plasma cells, and a command unit, wherein the first and the second electrodes of a given plasma cell are independent from the corresponding first and second electrodes of the contiguous plasma cells. The electrodes of contiguous plasma cells are independently connected to the command unit. The command unit includes a high voltage generator and a radiofrequency generator which are mutually protected by a filtering element.

Abstract: Proposed is a metering device (87, 54) for introducing a fluid (31) into a reaction vessel such as, for example, a bioreactor (2). The metering device according to the disclosure comprises a closure element (89) for closing the reaction vessel, at least one drop generator (33) arranged in the closure element, and a feed line (91) serving for feeding the fluid to the at least one drop generator. The drop generator comprises a nozzle (36) for dispensing the fluid into the reaction vessel, and a valve (35). In the closed state, the valve disconnects the nozzle from the feed line. The drop generator is suitable for generating individual drops of the fluid.