Device and a method for tangential flow filtration of a fluid

A device for tangential flow filtration of a fluid, comprising:

• a filter unit having a first fluid opening and a second fluid opening for the fluid, as a filter element and a permeate opening configured to discharge a permeate filtered out of the fluid;
• a first flow connection by which the first fluid opening is capable of being connected to a reservoir for the fluid;
• a second flow connection by which the second fluid opening is capable of being connected to the reservoir for the fluid;
• a first centrifugal pump disposed in the first flow connection, with which the fluid is capable of being conveyed from the reservoir to the filter unit;
• a first controller configured to actuate the first centrifugal pump, the filter unit configured such that the fluid for tangential flow filtration in the filter unit is capable of flow substantially parallel to the filter element;
• a second centrifugal pump for the fluid disposed in the second flow connection, which a counter-pressure is configured to be generated at the second fluid opening;
• and
• a second controller configured to actuate the second centrifugal pump.