Abstract: A method includes inducing a first quantity of a feed fluid (28) to flow along a first direction (72) from a bioreactor (12) to a tangential flow filter (16) to separate the first quantity of the feed fluid (28) into a permeate fluid (42) and a retentate fluid (48). Further, the control unit (66) is operated to control at least one feed flow control device (24, 26) to inhibit the flow of first quantity of the feed fluid (28). Furthermore, the control unit (66) is operated to control the at least one feed flow control device (24, 26) to direct at least one of further flow of a second quantity of the feed fluid (28) from the bioreactor (12), a portion of the permeate fluid (42), and a portion of a nutrient fluid, along a second direction (74) opposite to the first direction (72) via the tangential flow filter (16).