A fume hood, also known as a fume cupboard, is a ventilation system used in laboratories and other settings to control exposure to hazardous or noxious fumes, vapors, or dusts. It is designed to capture, contain, and exhaust harmful airborne contaminants from a work area, protecting laboratory personnel and the environment from potential health and safety hazards. Fume hoods are constructed as an enclosed workspace that is separated from the surrounding environment, usually made of steel or other durable materials, and equipped with a transparent sash or sliding glass doors. The sash is lowered or raised to control the amount of air flowing through the hood. Inside the hood, there is a work surface, typically made of a chemical-resistant material such as stainless steel, on which experiments or procedures can be performed. Additionally, fume hoods may have various built-in features, such as water, gas, or electricity outlets, to facilitate experiments or procedures. To understand ...