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Laminar flow cabinet

 
Laminar Flow Cabinet

 
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Laminar flow cabinet
 
 
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A laminar flow cabinet or laminar flow closet or tissue culture hood is a carefully enclosed bench designed to prevent contamination of semiconductor wafers, biological samples, or any particle sensitive device. Air is drawn through a HEPA
HEPA

File:HEPA_Filter_diagram_en.svgA high efficiency particulate air or HEPA filter is a type of high-efficiency air filter....
 filter and blown in a very smooth, laminar flow
Laminar flow

Laminar flow, sometimes known as Streamlines, streaklines and pathlines flow, occurs when a fluid flows in parallel layers, with no disruption between the layers....
 towards the user. The cabinet is usually made of stainless steel
Stainless steel

In metallurgy, stainless steel is defined as a steel alloy with a minimum of 10% chromium content by mass. Stainless steel does not stain, corrode, or rust as easily as ordinary steel , but it is not stain-proof....
 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.






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A laminar flow cabinet or laminar flow closet or tissue culture hood is a carefully enclosed bench designed to prevent contamination of semiconductor wafers, biological samples, or any particle sensitive device. Air is drawn through a HEPA
HEPA

File:HEPA_Filter_diagram_en.svgA high efficiency particulate air or HEPA filter is a type of high-efficiency air filter....
 filter and blown in a very smooth, laminar flow
Laminar flow

Laminar flow, sometimes known as Streamlines, streaklines and pathlines flow, occurs when a fluid flows in parallel layers, with no disruption between the layers....
 towards the user. The cabinet is usually made of stainless steel
Stainless steel

In metallurgy, stainless steel is defined as a steel alloy with a minimum of 10% chromium content by mass. Stainless steel does not stain, corrode, or rust as easily as ordinary steel , but it is not stain-proof....
 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. NSF49 is the commonly accepted regulatory standard for these cabinets.

Laminar flow cabinets may have a UV-C germicidal lamp
Germicidal lamp

A germicidal lamp is a special type of lamp which produces ultraviolet light . This short-wave ultraviolet light disrupts DNA base pairing causing thymine-thymine dimers leading to death of bacteria on exposed surfaces....
 to sterilize the shell and contents when not in use. (It is important to switch this light off during use, as it will quickly give any exposed skin sunburn
SunBurn

SunBurn is a regional event held in Florida. Although SunBurn has its roots in the annual Burning Man festival in Nevada, it is not an official Burning Man event, because the organizers of SunBurn do not condone the direction that the Burning Man Organization has taken over the years....
 and may cause cataracts.

See also

  • Fume hood
    Fume hood

    A fume hood or fume cupboard is a large piece of scientific equipment common to chemistry laboratories designed to limit a person's exposure to hazardous and/or unpleasant fumes....