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Showing posts from February 19, 2023

Laboratory Fume Hoods - Detailed Guide : Working, Types, Factors & Usage

Laboratory fume hood , also known as a chemical fume hood, is a type of ventilation system designed to capture and remove hazardous fumes, vapors, and dusts generated during laboratory work. Laboratory fume hoods are essential in protecting laboratory workers and the environment from exposure to hazardous chemicals and materials. How Do Laboratory Fume Hoods Work? A laboratory fume hood typically consists of a box-like enclosure with a movable sash or door on the front. The enclosure is connected to an exhaust system, which removes the air and the hazardous substances generated inside the hood. The sash or door can be adjusted to control the airflow and to prevent the escape of hazardous substances. The exhaust system typically comprises a fan, ductwork, and a filter or scrubber, which remove the hazardous substances from the air. The fan creates negative pressure inside the hood, which draws in the air and the hazardous substances, and directs them into the exhaust system. The ...