A sensible answer to anesthesia gas problems in the operating room, the charcoal 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. Canister is interchangeable with sytems that use F/Air canisters. BSci-Air will remove no less than 50 grams of pure halogenated anesthetic gases and can then be conveniently discarded.