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Difference between safety cabinets and workbenches
Difference between safety cabinets and workbenchesTo figure out the difference between biological safety cabinets and ultra-clean benches first of all to figure out their principles, biological safety cabinets are negative pressure purification benches, the work will be sucked inside, and the purpose is to avoid harmful substances contamination of the laboratory, to protect the experimenter, the subject sample.However, the clean bench is a positive pressure bench, the work will be inhaled into the filter, and the air is filtered and blown out, so that the sample can be protected, but does not protect the experimenter. From the cleanliness point of view, the cleanliness of the biological safety cabinet is higher than the ultra-clean bench, but the operation of the clean bench is relatively simple. The operation of the biological safety cabinet will have a lot to pay attention to, for example, before use, one must do a good job of personal protection, wear gloves, wear good protective clothing or isolation clothing, if necessary, and also need to wear goggles. The use of alcohol lamps inside the biological safety cabinet should also be avoided. The items placed inside the cabinet should be placed as horizontally as possible to avoid cross-infection and avoid blocking the back of the air return grille affecting the normal wind path. Move slowly during operation so as not to affect the normal wind conditions. Avoid vibration in the cabinet as much as possible, if there are two or more items in the cabinet that need to be moved, it should follow the principle of moving low-pollution items to high-pollution items. |
