6 Questions
Which class of biosafety cabinet provides personnel and environmental protection but no product protection?
Class I
Which class of biosafety cabinet is commonly used in clinical and research laboratories?
Class II
Which types does Class II cabinets include?
Type A1, Type A2, Type B1, Type B2, Type C1
Which class of biosafety cabinet is designed for work with BSL-4 pathogenic agents?
Class III
How do Class III cabinets handle materials entering and leaving the enclosure?
Using a dunk tank or double-door autoclave
What alternative name is sometimes used to refer to Class III cabinets?
Glove boxes
Study Notes
Class I Cabinets
- Provide personnel and environmental protection, but not product protection
- Can contribute to sample contamination due to inward air flow
- Used to enclose equipment (e.g. centrifuges) or procedures (e.g. aerating cultures) that generate aerosols
- Can be ducted (connected to building exhaust system) or unducted (recirculating filtered exhaust back into the laboratory)
Class II Cabinets
- Provide protection for both samples and the environment
- Makeup air is HEPA-filtered
- Commonly used in clinical and research laboratories
- There are five types: Type A1, Type A2, Type B1, Type B2, and Type C1
Class III Cabinets
- Provide maximum protection for work with BSL-4 pathogenic agents
- Installed in maximum containment laboratories
- Gas-tight enclosure with materials entering and leaving through a dunk tank or double-door autoclave
- Gloves attached to the front prevent direct contact with hazardous materials
- Sometimes referred to as glove boxes
Learn about Class I Biosafety Cabinets, their features, and applications in laboratories. Understand how they provide personnel and environmental protection but not product protection.
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