A plasmapheresis bowl for the separation and collection of plasma includes a core and a feed tube that increase the bowl efficiency and reduce foaming within the plasma. The core may have a cylindrical body and a ledge located within the interior of the core. The ledge extends radially inward from the core and defines, at least partially, a collection chamber within the plasmapheresis bowl. The core also has ribs that extend above the top of core body and create flow paths that allow fluid to enter the interior of the cylindrical body and collection chamber. The feed tube has a flow path extending through it that fluidly connects an inlet port on the plasmapheresis centrifuge. A first skirt member on the feed tube has a smooth angled surface that helps to reduce foaming.
