Laminar flow cabinet

Laminar flow cabinet
Laminar flow cabinet
UsesParticulate removal
Related itemsBiosafety cabinet
Fume hood
Preparation of microbiological samples in a laminar chamber

A laminar flow cabinet or tissue culture hood is a carefully enclosed bench designed to prevent contamination of biological samples, semiconductor wafers, or any particle sensitive materials. In a biosafety cabinet version air is drawn through a HEPA filter and blown in a very smooth laminar flow in a narrow vertical curtain, separating the interior of the cabinet from the environment around it. The cabinet is usually made of stainless steel with no gaps or joints where spores might collect.

Such hoods exist in both horizontal and vertical configurations, and there are many different types of cabinets with a variety of airflow patterns and acceptable uses.

A standard laminar flow cabinet (or “clean bench”) blows unfiltered exhaust air towards the user and is not safe for work with pathogenic agents.: 13  and is not to be confused with a fume hood

A microbiologist performing influenza research within a biosafety cabinet using laminar airflow to contain contaminants inside the hood

Laminar flow cabinets may have a UV-C germicidal lamp to sterilize the interior and contents before usage to prevent contamination of the experiment. Germicidal lamps are usually kept on for fifteen minutes to sterilize the interior before the cabinet is used. The light must be switched off when the cabinet is being used, to limit exposure to skin and eyes as stray ultraviolet light emissions can cause cancer and cataracts.

See also

This page was last updated at 2024-02-07 12:33 UTC. Update now. View original page.

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