Patent ID: 11931733
Assignee: SARTORIUS STEDIM BIOTECH GMBH
Field: Chemical engineering (Chemistry)
Classification: CPC B  A  C  G | IPC B  G

Claim 0:
1. A device for repeatedly modifying a composition of a fluid, comprising:
a first module for modifying the composition of the fluid, a second module for modifying the composition of the fluid and a dwell module with an inlet and an outlet,
wherein the first module is connected in a fluid-conducting manner to the inlet of the dwell module and the outlet of the dwell module is connected in a fluid-conducting manner to the second module,
wherein at least one of the first module and the second module is a filter unit,
wherein the filter unit has:
at least one supply channel,
at least one first filter medium,
at least one retentate channel,
at least one second filter medium, and
at least one permeate channel,

arranged so that the first filter medium delimits the supply channel and the retentate channel from one another, and the second filter medium delimits the retentate channel and the permeate channel from one another,
wherein the supply channel is connected in a fluid-conducting manner to at least one inlet for a supply medium,
wherein the retentate channel is connected in a fluid-conducting manner to at least one inlet for the fluid and to at least one outlet for the fluid,
wherein the permeate channel is connected in a fluid-conducting manner to at least one outlet for a permeate, and wherein either:
(i) the dwell module defines a coherent volume internally subdivided by at least one subdividing element forming a non-linear fluid path, or
(ii) the dwell module comprises a plurality of flow channels arranged in parallel to one another and all connected in a fluid-conducting manner to the inlet of the dwell module and in a fluid-conducting manner to the outlet of the dwell module.