Measuring and mixing devices

A metering and mixing device comprising:

• i. a cartridge holder comprising
• (a) a receiving container for multichamber cartridges, and
• (b) a compressed air connection and a connection for an application device, and
• ii. a multichamber cartridge inserted into the cartridge holder according to i., wherein said multichamber cartridge comprises the following sections:
• an upper section, comprising a directional control valve;
• a central section, a center of which is designed as a space which is extended in a direction of a longitudinal axis of the multichamber cartridge and is fitted with static mixing elements, and the space is surrounded by at least two chambers, wherein the chambers are arranged so as to be extended in the direction of the longitudinal axis of the multichamber cartridge, and adjacent chambers are separated from one another by a common partition wall, and each chamber is connected to the upper section by in each case at least one opening;
• and
• a lower section, which comprises a piston for each of the at least two chambers, wherein the pistons close off the at least two chambers leaktightly from below and are connected to one another by cutting devices, and the cutting devices are arranged in such a way that they are capable of severing the common partition wall of respective adjacent chambers when the pistons are moved in a direction of the upper section,
• wherein the multichamber cartridge and the cartridge holder have mutually complementary means for producing a reversible joint-type connection between the multichamber cartridge and the cartridge holder, and wherein a surface-to-surface, at least positive connection including an entire circumference of the multichamber cartridge, which extends over a partial region of the upper section and/or at least a partial region of the lower section and/or only a partial region of the central section of the multichamber cartridge, furthermore exists between the multichamber cartridge and the cartridge holder in a closed state of the reversible joint-type connection.