A biological safety cabinet, also known as a biosafety cabinet or BSC, is specialized laboratory equipment designed to control potentially hazardous biological particles and aerosols.
It uses controlled airflow and HEPA filtration to help protect laboratory personnel, samples and the surrounding environment.
How Does It Work?
A biological safety cabinet draws air inward through the front opening, helping prevent contaminated particles from escaping toward the user.
Inside the cabinet, HEPA-filtered air flows over the work area. Exhaust air is also filtered before it is recirculated or released, depending on the cabinet design.
Main Types of Biological Safety Cabinets
Class I
Provides protection for laboratory personnel and the environment, but it does not protect the sample from contamination.
Class II
Provides protection for personnel, samples and the environment. This is the most commonly used type in hospitals, research facilities, clinical laboratories and pharmaceutical companies.
Class III
A fully enclosed and gas-tight cabinet that provides the highest level of protection. Materials are handled through attached gloves.
Biological Safety Cabinet vs. Laminar Flow Cabinet
These two cabinets are not the same.
A biological safety cabinet protects the user, sample and environment from biological hazards. A laminar flow cabinet mainly protects the product and should not be used for potentially infectious materials.
Common Applications
Biological safety cabinets are commonly used in:
- Hospitals and clinical laboratories
- Medical and scientific research
- Pharmaceutical manufacturing
- Microbiology laboratories
- Universities and testing facilities
- Food and environmental laboratories
Why Proper Certification Matters
A biological safety cabinet must be regularly inspected and certified to confirm that its airflow, HEPA filters and safety systems are working correctly.
Certification is generally required after installation, relocation, major repair and during regular annual maintenance.
Choosing the Right Cabinet
Before purchasing a biological safety cabinet, consider:
- The biological materials being handled
- The procedures performed inside the cabinet
- Required personnel and sample protection
- Cabinet size and available laboratory space
- Ventilation and exhaust requirements
- Certification and after-sales support
Conclusion
A biological safety cabinet is an important part of laboratory contamination control. However, it must be correctly selected, installed, operated and maintained to provide reliable protection.
NuPon provides biological safety cabinet solutions for laboratories, hospitals, research facilities and industrial applications in the Philippines.