Patent ID: 7992725

Claim:
A buoy suspension fractionation system, comprising: a separation container and an access port through at least a portion of the separation container, the separation container is enclosed by a container wall, a container bottom, and a container top; and, a buoy in the separation container, the buoy having a tuned density and configured to reach an equilibrium position in a suspension material, the buoy comprising a buoy upper surface and a buoy sidewall defining a height, a transverse dimension through a center portion of the buoy, and a perimeter, the buoy further comprising; a guide surface on the buoy upper surface, the guide surface having a collection space above the buoy upper surface and the guide surface being inclined to an accumulation position near the buoy perimeter; and a collection port extending from the guide surface nearer the buoy perimeter than the center portion of the buoy and communicating with the access port and communicating with the collection space above the buoy upper surface.