A fume hood, also known as a fume cupboard or exhaust hood, is a piece of laboratory equipment designed to protect researchers and workers from harmful fumes, vapors, and dust generated during experiments or other chemical processes. It is a ventilated enclosure with a transparent front sash that can be raised or lowered to control airflow. The primary purpose of a fume hood is to capture and remove hazardous substances from the air, preventing their inhalation and minimizing the risk of exposure. Fume hoods typically have a powerful exhaust system that draws air from the hood and expels it outside the building or through a filtration system. This ensures that any toxic or noxious substances are effectively removed from the laboratory environment. Fume hoods are constructed with materials that are resistant to chemical corrosion, such as stainless steel or fiberglass-reinforced plastic. They are equipped with a variety of safety features, including alarms, airflow monitors, and sash sensors to ensure proper functioning and user protection. When working with volatile chemicals, fume hoods provide a controlled environment where researchers can safely handle and manipulate substances without the risk of contamination or exposure. They are essential in laboratories, research facilities, and industrial settings where hazardous materials are used. In summary, fume hoods are vital safety devices that protect laboratory personnel by capturing and removing harmful fumes and vapors. They create a controlled environment that allows for safe experimentation and handling of hazardous substances, ensuring the well-being of researchers and workers.