Bioreactor with condenser

A bioreactor (1) comprising:

• a vessel (2) with a flexible wall (7);
• a gas dissipation duct (3, 3′) joined to the flexible wall (7) and extending up from an upper part of the vessel (2) for gas discharge from the vessel (2), the gas dissipation duct (3, 3′) having an orifice (8);
• a hydrophobic sterile filter (5, 5′) connected to the orifice (8) of the gas dissipation duct (3, 3′);
• and a condenser (4, 4′) arranged above the vessel (2) and between the vessel (2) and the hydrophobic sterile filter (5, 5′) so that the gas dissipation duct (3, 3′) passes through the condenser (4, 4′), an outer wall (12) arranged at a distance out from the gas dissipation duct (3, 3′) at the condenser (4, 4′) and defining an interspace (17) between the outer wall (12) and the gas dissipation duct (3, 3′), connections (18, 19) communicating with the interspace (17) for conducting coolant through the interspace (17), surfaces of the gas dissipation duct (3, 3′) in the condenser (4, 4′) being configured to define turbulence generation means (9, 9′) for generating a turbulent flow and condensation in the gas dissipation duct (3, 3′) inward of the interspace (17), wherein the surfaces of the gas dissipation duct (3, 3′) that form the turbulence generation means are above the vessel (2) and communicate gravitationally with the vessel (2) via the gas dissipation duct (3, 3′) so that condensate produced at the condenser (4, 4′) flows gravitationally down through the gas dissipation duct (3, 3′) to the vessel (2), and the vessel (2), the condenser (4, 4′) and the sterile filter (5, 5′) being integrally connected and produced from gamma-sterilizable plastic and wherein the vessel (2), the condenser (4, 4′) and the sterile filter (5, 5′) are components of a disposable apparatus.