EuroFlow EF and EF/B
Biological Safety Cabinet
UM-EFAB-EN10.doc
7
1.2
EF/B
The EF/B is a class II Biological Safety Cabinet. It gives the user the possibility to work safely and
sterile with bioagentia without complete physical barrier between person and experiment (through
work opening (C)).
•
Working surface (A) is kept clear of particles by
means of a clean downflow of air.
•
Because of the downflow air passed through a
HEPA filter (High Efficiency Particulate Air), the
working area of the cabinet is free of particles.
•
This airflow is laminar, the airflow has got no
turbulence and has got a constant air speed.
•
Through the work opening (C) air is drawn into
the workspace (inflow), towards the front slots of
the worktop. This protects the personnel against
pathogenic aerosols that might be released.
•
The downflow and inflow air is then drawn
through a pre-filter (B) and a V-shaped HEPA filter
(G) by a fan (E), mounted on a plenum
construction. This fan blows the air in the correct
proportion to the downflow HEPA filter (D) and the
exhaust HEPA filter (F).
•
The extracted air of the cabinet can recirculate
into the laboratory or can be blown into an
exhaust channel.
•
In case the cabinet is used for cytostatics
production, the cabinet has to be connected to an
external exhaust channel.
Figure 2 Sectional view EF/B
