VentilationHood

 A Fume Hood is a ventilated enclosure designed to capture and exhaust hazardous chemical vapors, gases, and particulates to protect laboratory personnel. It operates by maintaining a consistent inward face velocity (80-120 fpm) to contain contaminants. Critical safety practices include working at the proper sash height, keeping equipment well inside the hood, and ensuring annual performance certification. It is distinct from biological safety cabinets and laminar flow hoods and must never be used for biological hazards unless specifically designed as a ducted enclosure for such use. It is an essential safety device in any laboratory handling chemicals.