A sensible answer to anesthesia gas problems in the operating room, the F/AIR anesthesia gas filter was specifically designed to remove waste anesthesia gases from the operating room environment. Economical to use, with an average useful life of 12 to 15 hours, the F/AIR is easily adaptable to anesthesia machines. The F/AIR can remove no less than 50 grams of pure halogenated anesthetic gases and can then be conveniently discarded.