NASAL CATHETERS, STOMACH TUBES, RECTAL TUBES, RUBBER TUBING FOR PARENTERAL FLUIDS, SETS FOR ADMINISTRATION OF PARENTERAL FLUIDS, AND CONSISTING OF TUBING EQUIPPED WITH NEEDLE ADAPTERS, AIR FILTERS FOR FILTERING AIR ADMITTED TO CONTAINERS OF PARENTERAL FLUIDS, NEEDLE ADAPTERS, DRIP HOUSINGS FOR ENCLOSING DRIP TUBES, AND CONTAINERS FOR PARENTERAL FLUIDS