Exhaust hood THREE series

laboratoryfor biohazardsbenchtop

The cabinet has been designed with a working area which is hermetically sealed to guarantee the highest level of personal protection by biological risk. The incoming air is Crossing an HEPA filter and then is exhausted totally through a double layer of serial ULPA filters. The airflow is guaranteed by a particular suction system which maintains négative pressure (about 124,5 Pa) inside the cabinet. The access to the working area is guaranteed by latex sleeve gloves, which are installed and fixed, via a coupling flange, on the front window of the cabinet. The product, although handled in a stérile environment, is indeed subject to risk of contamination due to the turbulence of the airflow inside the working area. The presence of air turbulences does not suggest to use this cabinet in case it is necessary to preserve and guarantee the sterility of the product. The ambient air enters, in horizontal laminar flow and in Class 100, from the latéral side of the cabinet after sterilization through absolute HEPA filter and crosses the stainless-steel working surface. The contaminated air, pulled by an external electric motor-fan on the cabinet upper part, in order to maintains négative pressure inside the working area, passes through two absolute ULPA filters. The clean air is now totally exhausted outside the building through a sealed pipe system. The exhaust air quantity has to be reintegrated in the ambient in order to avoid a dépréssion that could prevent the proper functioning of the equipment. The temperate glass frontal panel and the latex gloves applied to it,