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Single Pass System
Ambient air enters the pre-filter area and is forced through a HEPA filter, affording downward laminar flow through the clean zone.
The air is then exhausted out the front of the unit.
If necessary, the work deck can be perforated to allow air to pass directly through the unit and then out below the work deck.
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Recirculating System
The operation of a recirculating system is similar to that of a single pass unit.
The air is recirculated through a perforated work deck to a rear-mounted return air duct.
This returns the air to the blower intake where it is forced through the HEPA filter again and returned back to the clean zone.
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Clean Fume Hood Exhaust
The design of the Clean Fume Hood-Exhaust includes a
perforated work deck.
Ambient air enters the system at the top, pressurizes the blower plenum and then the clean air is forced through the HEPA filter with 99.99% effectiveness.
The air travels in a laminar flow down through the perforated work surface into the plenum area below and exhausts through the rear mounted exhaust duct to the outside of the central
exhaust system as determined by the design.
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Horizontal Flow Benches
The high density particle board, epoxy painted steel or stainless steel construction of the Laminar Flow Table Top unit reduces noise and vibration.
The HEPA filters incorporated into these units guarantee 99.99% efficiency in removing all particles of 0.3 micron or larger.
The sterile air produced across the work area meets the
requirements of class 100 of Federal Standard 209B, ISO and
bioclean conditions.
The Economy Table Top filtration unit is constructed of
high-density particle board, epoxy painted steel or stainless steel and all exposed surfaces are covered with Formica.
The adjustable voltage regulator maintains a nominal 100 FPM air velocity.
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