A sterile single use container comprising an internal volume, the container comprising a detachable attachment device comprising: a first attachment mechanism comprising a device body comprising an internal recessed portion and a coupling groove formed within the device body, and being substantially positioned within the internal volume of the container; and, a second attachment mechanism substantially positioned on the exterior of the container; wherein: the device body of the first attachment mechanism comprises a first surface opposite a second surface and an attachment means; wherein the attachment means is affixed to the first surface and the coupling groove extends from the second surface of the device body formed within the device body and is in communication with the internal recessed portion; the first and second attachment mechanisms are attached to one another to form a single, two-part attachment mechanism; the first attachment mechanism is adapted to reversibly attach an impeller within the internal volume of the sterile single use container thereto; characterised in that: the second attachment mechanism is adapted to reversibly attach a device exterior to the container thereto for lifting and/or transporting the sterile single use container and impeller. a first attachment mechanism comprising a device body comprising an internal recessed portion and a coupling groove formed within the device body, and being substantially positioned within the internal volume of the container; and, a second attachment mechanism substantially positioned on the exterior of the container; wherein: the device body of the first attachment mechanism comprises a first surface opposite a second surface and an attachment means; wherein the attachment means is affixed to the first surface and the coupling groove extends from the second surface of the device body formed within the device body and is in communication with the internal recessed portion; the first and second attachment mechanisms are attached to one another to form a single, two-part attachment mechanism; the first attachment mechanism is adapted to reversibly attach an impeller within the internal volume of the sterile single use container thereto; characterised in that: the second attachment mechanism is adapted to reversibly attach a device exterior to the container thereto for lifting and/or transporting the sterile single use container and impeller. the device body of the first attachment mechanism comprises a first surface opposite a second surface and an attachment means; wherein the attachment means is affixed to the first surface and the coupling groove extends from the second surface of the device body formed within the device body and is in communication with the internal recessed portion; the first and second attachment mechanisms are attached to one another to form a single, two-part attachment mechanism; the first attachment mechanism is adapted to reversibly attach an impeller within the internal volume of the sterile single use container thereto; characterised in that: the second attachment mechanism is adapted to reversibly attach a device exterior to the container thereto for lifting and/or transporting the sterile single use container and impeller.