Abstract: A medication dispenser for use in a hospital or other medical setting comprises a plurality of containers for holding medication units, packaging apparatus for containing one or more medication units in a package and robotics for manipulating a selected container to transfer one or more medication units from the container directly to said package. Since medication is directly transferred from the container to the package, no cross-contamination occurs.

Abstract: A filter chamber provided with a side wall having a row of uniformly spaced openings therethrough also has an end wall provided with an access door from which a track extends along the side wall below the openings. Filter units are insertable through the door for placement on the track. A rod extending lengthwise of the track and having an outer end accessible through the door is supported for axial movement back and forth parallel to the track between inner and outer positions. At longitudinally spaced intervals greater than the width of a filter unit lugs project from the rod, all in the same direction. There are as many lugs as the wall openings. The rod is rotatable to turn the lugs from positions in which they will overlap one side of filter units on the track to positions that permit the lugs to be moved to the opposite side of the filter units.