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 cartridge comprises the following sections:
• an upper section, comprising a directional control valve;
• a central section, comprising a space which is extended in the direction of the longitudinal axis of the cartridge and is fitted with static mixing elements, and also at least two adjacent chambers, wherein the chambers are arranged so as to be extended in the direction of the longitudinal axis of the 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 chambers, wherein the pistons close off the 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 the direction of the upper section,
• wherein the multichamber cartridge and the cartridge holder have mutually complementary means for the production of a reversible joint-type connection between the cartridge and the holder, and wherein a surface-to-surface, positive and non-positive connection including the entire circumference of the cartridge, furthermore exists between the cartridge and the holder in the closed state of the reversible joint-type connection.