Patent ID: 11878312
Assignee: PNEUMATIC SCALE CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B

Claim 30:
31. The apparatus according to claim 29 and further comprising:
at least one annular air tight seal,
wherein the at least one annular air tight seal extends in operative sealing relation between the first disc shape portion and at least one annular outer wall that extends outwardly of at least one of the concentrate discharge tube, the centrate discharge tube and the central tube,
wherein the at least one annular air tight seal is operative to maintain an air pocket within the interior area during cell culture batch processing, wherein air in the air pocket separates the at least one annular air tight seal from material of the cell culture batch, while maintaining material of the cell culture batch in fluid connection with each of the centrate centripetal pump and the concentrate centripetal pump.