Apparatus for the bubble-free gassing of liquids especially of culture media for propagating provided particularly tissue culture

摘要

PCT No. PCT/EP85/00387 Sec. 371 Date Mar. 17, 1986 Sec. 102(e) Date Mar. 17, 1986 PCT Filed Aug. 2, 1985.In a process and an apparatus for the bubble-free gassing of liquids, especially of culture media for propagating tissue cultures, in which process and apparatus a gas exchange occurs across an immersed membrane sheet, to achieve simple, effective and as uniform as possible a distribution of the gas introduction and gas desorption without mechanical damage to the liquid constituents, a tubular membrane cage formed by hollow membrane filaments is suspended flexibly in the medium to be gassed and moved in a circular oscillating movement without true rotation. The gassing rate is controlled by altering the angular oscillating movement frequency and/or the radius of the circular path, or alternatively by altering the gas concentration and/or the pressure of the gas flowing into the membrane cage.