Abstract: Method for filtering a suspension consisting of a fluid and cell or solid particles, wherein the suspension is guided at least through a curved capillary tube of a filter and passes at least partially through a porous filter wall of the curved capillary tube in order to separate the fluid from the cell or solid particles, wherein the curvature of the capillary tube has a predetermined radius of curvature which is suitable for specifically preventing an accumulation of cell or solid particles of the suspension on an inner curvature edge of the capillary tube.