A fluid filtering device includes a plurality of filtering wells and an
angling mechanism which adjusts the angle of the membranes within the
filtering wells relative to a line of a centrifuge where the line is
perpendicular to the axis of rotation of a centrifuge and passes through
the center of a major plane of the filtering device. The angling
mechanism can include a wedge located between the center of rotation of a
centrifuge and a swinging bucket of the centrifuge. The angling mechanism
can also be located within each filtering well and can provide
individually specified angles for each membrane, relative to the line of
the centrifuge.
