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'Safety
cabinet with a front aperture through which the operator can carry out
manipulations inside the cabinet and which is constructed so that the
worker is protected and the escape of airborne particulate contamination
generated within the cabinet is controlled by means of an inward airflow
through the working front aperture and filtration of the exhaust air'.
The class I microbiological safety cabinet provides a robust wide performance envelope for the user from
aerosol hazards and other particulate matter within the cabinet's working area. All
extract air is exhausted through hepa (high efficient particulate air)
filtration generally to atmosphere although recirculation models are also available. Inflow air velocity should be between 0.7 and
1.0 m/sec and by their design nature are less susceptible to poor working
techniques of the user or less than ideal room air conditions although this
is no excuse for either. Safety
Cabinets Solutions stress, neither poor site conditions or poor techniques should
be tolerated
in the modern safety conscious laboratory environment. The class I msc is
very much a UK cabinet with most of the rest of the world preferring the more versatile
class II msc. |
