Biological safety cabinet exhaust:
1. First discharge to the laboratory through the filter of the safety cabinet, and then discharge to the outside of the building through the laboratory exhaust system;< /p>
2. Discharge to the outside of the building through the filter of the laboratory exhaust system;
3. Discharge directly to the outside of the building through the filter of the safety cabinet. The filter can be installed in the pressure exhaust system of a fully exhaust biological safety cabinet or in the exhaust system of the building. Extended information
Precautions for biological safety cabinets
1. In order to avoid cross-contamination between items, the items required during the entire work process should be placed in a row before starting the work. in the safety cabinet so that nothing needs to be taken out or put in through the air flow compartment before the work is completed. Special attention: Do not place objects on the return air grilles in the front and rear rows to prevent blocking the return air grilles. Affects air circulation.
2. Before starting work and after completing work, it is necessary to maintain air circulation for a period of time to complete the self-purification process of the safety cabinet. After each test, the cabinet should be cleaned and disinfected.
3. During operation, try to reduce the number of times your arms go in and out. Your arms should move slowly when entering and leaving the safety cabinet to avoid affecting the normal air flow balance.
4. The movement of items in the cabinet should be based on the principle of moving from low pollution to high pollution, and experimental operations in the cabinet should be carried out from the clean area to the contaminated area. Use a disinfectant-soaked towel as a base before operation to absorb any spills.
5. Try to avoid placing centrifuges, oscillators and other instruments in safety cabinets to prevent the particulate matter on the filter membrane from shaking off when the instrument vibrates, resulting in a decrease in cleanliness in the cabinet; at the same time, the heat dissipation of these instruments The airflow from the air outlet may affect the airflow balance in the cabinet.
6. Do not use open flames in the safety cabinet to prevent high-temperature fine particle impurities generated during the combustion process from being brought into the filter membrane and damaging the filter membrane.
Baidu Encyclopedia-Biological Safety Cabinet