Lab Safety Cabinet Installation Operation Precautions and Routine Maintenance
1, Lab Safety Cabinet installation and operation precautions
The speed of the air entering the Lab Safety Cabinet through the front opening is approximately 0.3 m / s to 0.5 m / s. This is the speed of the directional air is very susceptible to interference, including personnel approached the Lab Safety Cabinet formed by the air, open the windows, air supply system adjustment and switch doors and so may have an impact. Therefore, Lab Safety Cabinets should be kept in places where personnel are moving, items flow, and may disrupt airflow. In the rear of the safety cabinet and each side as far as possible to leave room in order to accurately measure the speed of air through the exhaust filter, and to facilitate the replacement of the exhaust filter.
If the Lab Safety Cabinet is improperly used, its protective effect may be greatly affected. Operators in the movement of arms into and out of the safety cabinet, the need to carefully maintain the integrity of the air in front of the opening, arms should be slowly and slowly into the front of the opening.
Hands and arms into the Lab Safety Cabinet waiting for about 1min, so that the safety cabinet is adjusted and let the air inside "sweep" the hands and arms of the surface before they can begin to deal with the items. To put all the necessary items in the safety cabinet before starting the experiment, to minimize the number of times the arms are in and out of the front opening.
(3) items placed
Class II Lab Safety Cabinets in front of the intake grille can not be paper, equipment or other items blocked. Articles placed in safety cabinets should be 70% alcohol to eliminate surface contamination. Experiments can be carried out on a towel soaked with a disinfectant to absorb droplets that may be spilled.
All items should be placed as far as possible on the back of the table near the edge of the table and make it in the operation will not block the waiting grid. Aerosol-generating equipment (eg mixers, centrifuges, etc.) should be placed near the rear of the safety cabinet. Like a biologically hazardous waste bag, a tray of discarded straws, and larger items such as a suction filter should be placed on one side of the safety cabinet. The experimental operation on the work surface should be carried out in the direction from the cleaning area to the contaminated area.
The autoclave-resistant bio-hazardous waste bags and the pipette should not be placed outside the safety cabinet, otherwise the arms must be frequently used in and out of the safety cabinet when using these items, which would interfere with the integrity of the safety barrier, Thus affecting the protection of people and goods.
(4) daily maintenance
Most Lab Safety Cabinets are designed to work 24 hours a day. Researchers have found that continuous work helps to control the level of dust and particles in the laboratory. I-level A1 and A2 Lab Safety Cabinets that are ventilated to the room or connected to a dedicated air duct through a casing interface can be closed when not in use. Others such as Class II B1 and Class II Class B2 Lab Safety Cabinets are installed through a hard pipe and must always maintain air flow to maintain room air balance. Before starting work and after completing work, at least 5 minutes To complete the "purification" process to ensure that the pollution of the air safely discharged safety cabinets.
All maintenance work in the Lab Safety Cabinet should be carried out by qualified professionals. Any failure in the operation of the Lab Safety Cabinet should be reported and should be repaired before re-use.
(5) UV lamp
There is no need for UV lamps in Lab Safety Cabinets. If you use the UV lamp, it should be cleaned weekly to expose dust and dirt that may affect its bactericidal effect. When reassembling the safety cabinet, check the intensity of the UV light to ensure proper light emission. Someone in the room must turn off the UV lamp to protect the glasses and skin from accidental exposure.
(6) open fire
In the Lab Safety Cabinet formed almost no microbial environment, should avoid the use of open flame. The use of open flames can have an impact on airflow and may be dangerous when handling volatile and flammable materials. In the case of sterilization of the inoculum, a micro burner or an electric furnace may be used instead of an open flame.
Labs are required to post a laboratory operation rule on how to deal with spills, and each member of the laboratory uses reading and understanding of these rules. Once a biologically hazardous item spills in a Lab Safety Cabinet, it should be cleaned immediately when the cabinet is in working condition. Use effective disinfectants and minimize aerosol formation during processing. All materials that come into contact with spillage should be sterilized and / or autoclaved.