Patent ID: 7288195

Claim:
A filtration system comprising: a filtration cell including: at least one containment vessel for containing a fluid to be filtered; a flow channel having at least first and second openings connected to the at least one containment vessel for providing a fluid flow path between the at least first and second openings; a filter membrane substantially tangentially aligned with the fluid flow path and connected to the flow channel; and a filtrate receiving area adjacent the filter membrane opposite the flow channel, wherein the filtrate receiving area is separated from the fluid flow path by the filter membrane; a fluid pressure source connected to the at least one containment vessel for providing a flow of fluid along the flow path through the flow channel; and a controller connected to the fluid pressure source adapted to control the fluid pressure source to displace the fluid alternately in a first direction along the flow path and in a second direction substantially opposite the first direction along the flow path.