Which device is used to prevent exposure to hazardous fumes from chemicals?

• A. Fume hood
• B. Biotech safety cabinet
• C. Lab safety cabinet
• D. Clean bench

Answer: (A)

Handling hazardous chemical vapors requires an engineering control that captures fumes at the source and removes them from the breathing zone. A fume hood does exactly this: it pulls air across the work area and exhausts it outside the room (often with filtration options), keeping hazardous vapors away from your face while you work with volatile or toxic chemicals. This protection is why a fume hood is the best choice for preventing exposure to chemical fumes. A biotech safety cabinet is designed to protect personnel from biological aerosols and to keep samples from contamination, not to manage chemical vapors. A clean bench provides a sterile or clean air environment for the sample and does not exhaust fumes away from the user, so it doesn’t reliably protect against chemical vapors. A general lab safety cabinet may not offer the dedicated chemical fume containment and exhaust system needed to safeguard the user from fumes.