Expertise In Research Anesthesia,. Equipment And Supplies Contains 2.25 pounds of the highest quality activated charcoal available to make the WAG Canister the most effective filter on the market. •Will adsorb a minimum of 200 grams Isoflurane/Sevoflurane. (4 times the amount of traditional activated charcoal canisters). •Unique design traps Isoflurane/Sevoflurane •Relief holes on top ensure that canister can sit upright on a flat surface. •Passed independent testing according to OSHA regulations of 2pp. (Using infrared spectrophotometer) No breakthrough exhibited Also Available as a Kit with 4 Canisters and Gram Scale (AS-00-WAG-C). Holder also available for pole mount option(AA-00- Available with "T" System Adapter