Mixing device having a stirring element

A mixing device having a stirring element, comprising:

• a flexible container for receiving fluids and/or solids;
• and
• at least one rotatable stirring element for mixing the fluids and/or solids;
• wherein the stirring element comprises a first bearing element and a second bearing element which are arranged at or near opposite ends of the stirring element;
• wherein the first bearing element is mounted on a first face of the container and the second bearing element is mounted on an opposite second face of the container;
• wherein the first bearing element comprises at least one non-permanently magnetized element in order to be able to be set in rotation by externally induced reluctance forces,
• wherein the second bearing element is mounted in a contactless manner by externally induced magnetic forces, and
• wherein the flexible container includes at least one cylindrical wall recess which is designed to at least partially receive the second bearing element.