Flow cell having a housing component

A microfluidic flow cell for carrying out an analysis, comprising:

• a predetermined breaking barrier;
• a plastic plate having cavities for forming channels and chambers;
• a film adhesively bonded or welded to the plastic plate-so as to close the cavities on a first face of the plastic plate;
• and
• a plate shaped injection molded composite housing consisting of a rigid hard component and a deformable soft component, wherein
• the plate shaped composite housing is connected to a second face of the plastic plate facing away from the first face by welding, riveting or adhesive bonding, the deformable soft component comprising a plurality of elastically deformable soft component sections, wherein
• the plate shaped injection molded composite housing is configured to complement functional sections of the flow cell that each fulfill a function of the flow cell and is configured as a multifunctional part that complements more than two functional sections of the flow cell in a single joining process, and wherein
• the rigid hard component of the plate shaped injection molded composite housing complements a storage chamber as a functional section of the flow cell, and wherein
• one of the functional sections is a device for breaking the predetermined breaking barrier, the device including a section of the deformable soft component of the plate shaped injection molded composite housing that is externally deformable, wherein
• a membrane is part of the deformable soft component of the plate shaped injection molded composite housing and is an elastomer material welded fluid-tightly to the plastic plate, the membrane capable of being stretchable by an actuation element of an operating instrument into a through-opening in the plastic plate so as to deflect the film adhesively bonded or welded to the plastic plate so that the predetermined breaking barrier breaks wherein the predetermined breaking barrier is an apex of a prismatic barrier member of the plastic plate to which the film is adhesively bonded or welded, and wherein
• the membrane is arranged at a distance from the film and the through-opening is between the membrane and the film.