In laboratory testing, what is the function of a biological safety hood?

The function of a biological safety hood is primarily to contain and exhaust hazardous fumes and particles. This specialized equipment is designed to protect laboratory personnel, the environment, and the integrity of the samples being handled. By drawing air from the laboratory through high-efficiency particulate air (HEPA) filters, the hood creates a negative pressure environment, which ensures that any aerosols, bacteria, or chemical vapors produced during procedures are effectively captured and removed from the working area.

This containment is especially crucial when working with potentially infectious materials or toxic substances, as it helps prevent exposure or contamination. Unlike other laboratory equipment that may focus on providing a sterile environment, validating results, or controlling temperature, the biological safety hood is specifically designed for safety and bio-protection, making its role essential in laboratories where hazardous biological materials are handled.