Class ii biosafety cabinet types

How A Class II Biosafety Cabinet Works

A BSC is a box with a blower moving air within.
A transparent panel on the front allows personnel to see inside.
An opening at the bottom of the panel lets technicians reach in and perform work.
This is known as the window sash.
As the blower drives air through the box, the BSC becomes a study of fluid dynamics involving the Bernoulli principle.
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How does a biosafety cabinet work?