+16 Vertical Vs Horizontal Laminar Flow Hood & Best Training Tips - RSCA. Hands & gloves are at. In contrast, vertical laminar flow hoods take air from above the unit, push it through the hepa or ulpa filter, then direct it downward onto the work surface, where it eventually.
At first glance, these containment. The vertical laminar flow hood system directs the flow to a downward filter at the top of the work chamber on the operating surface. Neither vertical nor horizontal laminar flow hoods are appropriate in the presence of biohazards.