A portable containment system includes a glovebox apparatus, a self-contained filter unit, and removable conduits extending therebetween. In one embodiment, the method includes the steps of mixing platelets with a platelet preservation composition to form a platelet preparation, storing the platelet preparation for a desired period of time, and removing the antiplatelet agent and the anticoagulant from the platelet preparation by diafiltration prior to transfusion of the platelets. A heat transfer path is simplified in packaging the optical device module, so that the optical device can avoid performance degradation due to nonuniform temperature distribution.