By the way, don't just call it a laminar flow hood, this is a biosafety cabinet. Laminar flow is a property of many different types of enclosures, including biosafety cabinets, some types of chemical hoods, balance enclosures,etc.
-- Typically, a "laminar flow cabinet" ONLY provides laminar flow, but no biological or chemical protection. For example, laminar flow cabinets used for plant tissue culturing push a curtain of filtered air from the back of the cabinet, over the work area, towards the user. This type of hood would be entirely inappropriate to use with pathogens, engineered microorganisms, or toxic chemicals, because it provides zero protection to the user.or the environment.
Likewise, a chemical hood or fume hood is NOT the same as a biosafety cabinet. A BSC uses HEPA filters to filter out potentially infectious particles. A chemical hood uses activated carbon filters or an external exhaust to deal with toxic chemicals. But you do NOT want to use biological materials inside a chemical hood, because it is absolutely not designed to contain those. And you do NOT want to use any fuming chemicals in a biosafety cabinet, because they will just pass straight through the HEPA filter and get exhausted into the air.
TL;DR: use the right tool for the job! A laminar flow hood is not a biosafety cabinet is not a chemical hood.
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