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In an embodiment, an apparatus includes a conduit,. The apparatus also includes two or more flexible compartments. Each of the two or more flexible compartments has an interior wall defining a storage area configured to house a substance. Each of the two or more flexible compartments includes a distal end and a proximal end. The proximal ends of the two or more flexible compartments are coupled to the conduit such that the conduit defines a passageway between the two or more flexible compartments. A diameter of the storage area at the proximal end is less than a diameter of the storage area at the distal end. (FIG. -1)