| 摘要 |
The present invention is concerned with a fluid circulation apparatus for use as a bioreactor or the like, the apparatus comprising a flexible bag like container within which is disposed a collapsible and at least partially inflatable draft tube which is tethered to a base of the container such that when inflated the draft tube rises off the base and maintains the correct shape as a result of the inflation thereof, and which includes perforations in order to allow the inflation gas to escape and rise upwardly through the draft tube to generate counter current circulation within the container.
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