Personal defense against dangerous substances within the cabinet To prevent sample contamination, use product protection.
Environmental protection from the Biological Safety Cabinets
internal pollutants.
Based on its ability to confine biological agents when handling them,
biological safety cabinets are divided.
When working with biological agents that offer a minimum danger or harm
to laboratory staff and the environment, biosafety level is used. Without the
use of some containment tools, work with the kinds of agents is often done in
open lab cabinets.
Working with harmful organisms that provide a moderate risk is covered
under the biosafety level. When working with native or exotic agents that have
the potential to transmit serious or fatal diseases through aerosols, biosafety
Level is the standard.
When working with severely hazardous, infectious, and life-threatening
chemicals, use Biosafety Levels. At all times, a high level of containment and a
better safety is needed. When handling chemicals and powders safely, the
biological safety cabinet protects both people and the environment.
As air enters the cabinet through the front aperture, a built-in exhaust
fan, HEPA filter, and/or carbon filter shield the user and the environment. The
air then exits the cabinet at the back of the work surface. Therefore, any
airborne particulates created inside the cabinet are prevented from escaping by
the airflow through the front aperture and the filtration of the excluded air. The
HEPA filter in the cabinet safeguards the environment by filtering the air
before it is exiled. Research materials that are susceptible to airborne
contamination should not be handled in a Class Safety Cabinet because the
unfiltered air flow from the lab can introduce microorganisms into the cabinet.
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