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Four major differences between clean benches and biological safety cabinets
Four major differences between clean benches and biological safety cabinetsThe clean bench is designed to meet the needs for cleanliness of local work areas in modern industry, optoelectronics industry, biopharmaceuticals, scientific research and experiments, and other fields.Note: A clean bench is different from a biosafety cabinet. The ultra-clean workbench can only protect the reagents operated in the workbench from contamination, but does not protect the staff; the biological safety cabinet is a negative pressure system, which can effectively protect the staff. The working principle of the ultra-clean workbench is: the air is sucked into the pre-filter through the fan, enters the high-efficiency filter through the static pressure box, and sends the filtered air out in a vertical or horizontal airflow state, so that the operating area reaches level 100 cleanliness, **Production requirements for environmental cleanliness. Clean benches are divided into vertical flow clean benches (Vertical Flow Clean Bench) and horizontal flow clean benches (Horizontal Flow Clean Bench) according to the direction of airflow. According to the operating structure, the clean workbench is divided into two forms: unilateral operation and bilateral operation. According to its use, it can be divided into ordinary clean workbench and biological (medical) clean workbench. The ultra-clean workbench is a purification workbench used in medical and health, pharmaceutical, chemical experiments, and other fields, and provides a sterile and dust-free clean environment. Speaking of the clean workbench, some people may ask whether it is the same as a biological safety cabinet. In fact, this is not the case. The highlight of the ultra-clean workbench is that it is sterile and dust-free so that the reagents operated in the workbench can be protected from contamination. Biological safety cabinets are used to protect the operator, the laboratory environment, and experimental materials from being exposed to the above operations when operating primary cultures, bacterial strains, diagnostic specimens, and other infectious experimental materials. Designed to handle possible infectious aerosols and splashes, it highlights safety and can effectively protect workers. The main differences between a clean workbench and a biological safety cabinet are the following four points: 1. The biological safety cabinet is a safety equipment widely used in scientific research, teaching, clinical testing, and production in the fields of microbiology, biomedicine, genetic recombination, animal experiments, biological products, etc. It is also the first-level protection in laboratory biosafety. The most basic safety protection equipment is barriers. 2. The ultra-clean workbench is designed to protect experimental materials. The air is sucked into the pre-filter through the fan, enters the high-efficiency filter for filtration through the static pressure box, and sends the filtered air out in a vertical or horizontal airflow state to facilitate operation. The area has reached level 100 cleanliness, meeting production requirements for environmental cleanliness. It can only protect the sample, not the operator. 3. The biological safety cabinet is a negative pressure purification workbench. Correct operation of the biological safety cabinet can completely protect the staff, and the test samples and prevent the occurrence of cross-contamination; while the ultra-clean workbench only protects the operating objects but not the Clean benches for workers and laboratory environments. Therefore, in scientific research, teaching, clinical testing, and production of microbiology and biomedicine, biological safety cabinets should be selected and used instead of clean benches. |
