A packaging is composed of two foils joined along their edges that enclose at least one chamber containing a carrier provided, or to be provided, with a medium. The tool includes a main handle made from steel or any other suitable tough metal or plastic, a button, a blade cartridge, two or more blades, a top blade holder, a bottom blade holder, an axle, a retaining ring, and a knob. The substrate has a nitride layer above the surface. Flow reversal on the patient’s side of this device is possible by appropriate clamping of two opposed tube sections of the rectangular array which may be formed by the joined tube sections, while flow remains unchanged on the side of the tubular set portion that is connected to the extracorporeal blood treatment device. The model can subsequently be used to predict whether future calls are likely to result in the pre-determined business outcome. The conductor strips are connected to a read-out circuit in one of the semiconductor chips via connections.