Pre-sterilizable carrier system

A method of filling at least one dual-chamber system having a first chamber with a first sealable opening and a second chamber with a second sealable opening, each dual-chamber system further including a separating element separating the first chamber from the second chamber, the method comprising:

• securely retaining the at least one dual-chamber system in a container with a magazine in a first orientation, such that each dual-chamber system of the at least one dual-chamber system is securely retained in a first configuration relative to the container with the first opening facing upwardly and the second opening facing downwardly;
• introducing a first solution into the first chamber of the at least one dual-chamber system through the first opening;
• inverting each dual-chamber system of the at least one dual-chamber system such that each dual-chamber system is securely retained in a second configuration relative to the container with the second opening facing upwardly and the first opening facing downwardly;
• and
• introducing a second solution into the second chamber of the at least one dual-chamber system through the second opening;
• wherein inverting each dual-chamber system of the at least one dual-chamber system includes:
• removing the magazine from the container with each dual-chamber system securely in the magazine independent of an orientation of the magazine;
• turning the magazine over to a second orientation;
• and
• returning the magazine to the container with each dual-chamber system in the second configuration.