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

Claim 9:
10. The apparatus according to claim 9 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 upper disc shape portion and at least one annular outer wall that extends outwardly of at least one of the central tube, the centrate discharge tube and the concentrate discharge tube,
wherein the at least one annular air tight seal is operative to maintain an air pocket within the interior area, wherein air in the air pocket isolates the at least one annular air tight seal from the cell culture batch being processed, while maintaining the cell culture batch in fluid connection with each of the centrate centripetal pump and the concentrate centripetal pump.