Dosing device for bioreactors

Metering device for bioreactors, comprising a metering line (11), wherein a first end of the metering line (11) having a storage container (1) is connectable and a second end of the dispensing section (11) is connected to a bioreactor (10) is adapted connectable such that the substrate (9) over the dosing segment (11) can be fed to a bioreactor (10); a metering chamber (4), of a portion of the metering section (11), which is bounded by a receptacle locking device (3) and a discharge block (5); a receptacle locking device (3) through which a substrate receiving in the metering chamber (4) can be regulated and / or controlled is interrupted; an output block (5) through which a substrate discharge from the metering chamber (4), optionally in a bioreactor (10), regulation and / or is controllable interruptible; and a control unit (2) via which the receiving locking device (3) and the discharge check device (5) independently of one another regularly and / or controlled to close and / or to open, characterized, in that comprises the dosing chamber (4) on an inner side of a flexible membrane (15), ...