The Class I Biological Safety Cabinet is a
negative-pressure, ventilated cabinet usually operated with an open
front and a minimum face velocity at the work opening of at least
*5 linear feet per minute (lfpm). All of the air from the cabinet
is sent through a HEPA filter, either into the laboratory or to the
outside. All of the air from the cabinet is
sent through a HEPA filter, either into the laboratory or to the
outside.
