UniFlow Perchloric Acid fume hoods feature a type 316 stainless steel one piece fume chamber with integral worksurface and are engineered for the safe handling of perchloric acids in laboratory procedures. Perchloric Acid hoods are offered in sizes 48", 60", & 72" widths and include a dedicated wash down and exhaust system. It is recommended to thoroughly wash down fume chamber and exhaust system after each use.