Biosafety cabinets, fume hoods and clean benches are common operating devices in the pharmaceutical and scientific research laboratories. It seems that the three seem to be very similar in appearance, but in fact these are three different types of devices, so in the experiment In the construction of the room, it is necessary to clearly distinguish between biological safety cabinets, fume hoods and ultra-clean work stations.
product name | Fume hood | Ultra-clean workbench | Biological safety cabinet |
Application range | Experimental operation to produce various harmful and odorous gases, odors, moisture and corrosive substances | A body that has a need for cleanliness of a local work area | When performing original culture, bacterial strain experiments or using infectious experimental materials |
working principle | The gas entering the fume hood is expelled by the fan and released safely into the atmosphere. | The ambient air is drawn into the pre-filter by a fan and filtered through a high efficiency filter, and the filtered air enters the operating area. The ultra-clean workbench is divided into a vertical flow ultra-clean workbench and a horizontal flow ultra-clean workbench according to the direction of the airflow. | The incoming air is filtered by the air supply filter, and is settled downward from the top and at a certain rate, and then flows downward through the table; a special vertical air curtain with a certain wind speed is formed at the opening of the door glass to prevent unfiltered The air goes straight in. |
Protective function | â– Person â–¡Product â– Environment | â–¡ staff â– Product â–¡Environment | â– Person â– Product â– Environment |
Structure and composition | Fan Control System disinfection illumination | air filter Fan Control System disinfection illumination | Air supply air filter External air filter Fan Control System disinfection illumination |
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