The present invention relates to a method of performing inter System radio measurements in compressed mode. In this seat, the center of a load to be received in regions symmetrically divided to a vertical central line of the seat are positioned outside of a back region defined by left and right angulus inferior scapulae and by the upper ends of iliac bones. The filtrate flows initially substantially parallel to the filter cloth towards the outlet, is deviated through the deviation element in an outlet direction perpendicular to the filter cloth, and flows out through the outlet. The distributing chamber can be brought into contact directly with the fuel cells, so that the entry of the medium into the fuel cells can occur over a predetermined region of the fuel cells.