Dispenser having a cartridge holder

A system comprising:

• a) a cartridge receptacle having a piercing means for perforating a membrane;
• b) a cartridge closed by means of the membrane;
• and
• c) a dispenser having:
• i) a cartridge holder;
• ii) at least one guide and/or twist prevention means for the cartridge receptacle and which is part of the cartridge holder;
• iii) a compressed-air-outlet which is part of the cartridge holder and is connected to a compressed-air source
• wherein a compressed-air- line is integrated into the piercing means;
• wherein a compresses-air connection of the compressed-air line for connecting to the compressed-air source is formed on a side of the piercing means that is remote from the cartridge;
• wherein the compressed-air connection is accessible from outside the cartridge receptacle, and
• wherein the compressed-air outlet of the compressed-air line for blowing a compressed air into the cartridge is formed on a side of the piercing means that faces the cartridge.