Abstract: The device has a current supply (1) connected to a control unit (2) including operating keys (3). The operating keys (3) provide for the inputting of a selectable dose amount or dosage per time unit or dose period. A liquid reservoir (5) stores fluid to be expelled. A droplet generator (8) includes a plurality of jets (13) connected to piezo-electrical or thermo-electrical converters which generate heat. Each jet and associated converter is individually controlled by the control unit. The device provides exact dosing of extremely small amounts of liquid, for example in the medicinal field, specifically with respect to inhalators or infusion instruments.