The biosafety cabinet is designed to protect the operator, the laboratory environment, and the laboratory materials from exposure to infectious aerosols and spills that may occur during the above operations. The choice of biosafety cabinets depends on factors such as the lethality of the microbiological test products or products involved, the media, etc. These factors can be classified into Levels 1 to 4 Biosafety Levels (BSL): Biosafety level fatal media curable paradigm BSL-1 no or very low liquid can BS* BSL-2 general liquid can be HIV BSL-3 high air can TBC BSL-4 Very high air is not Ebola * Bacillus subtilis (Bacillus subtilis) Microbiological test products or products classified as Level 1 and Level 2 of the biosafety level do not produce aerosols and therefore work on open laboratory surfaces; and for some processes that may involve or produce harmful biological substances, they should be in the organism. In a safety cabinet, it is best to use a secondary biosafety cabinet under these conditions. Test products or products with a level II biosafety level can be transmitted through the liquid, so the operator must pay special attention to the contaminated sharps. When customers purchase safety cabinets, they also pay attention to ensure that there is no sharp angle, and they need to clean the work surface every day. In a biological laboratory with a three-level biosafety level, all steps related to the operation of the source of infection are carried out in a secondary or tertiary biosafety cabinet and performed by an experimenter wearing appropriate protective clothing; for a four-level biosafety Level, all work should be limited to the three-level biosafety cabinet; if it is carried out in the secondary biosafety cabinet, an integrated positive pressure protective suit equipped with a life support system must be used. It is important to note that when new types of unknown microorganisms are present, they must also be carried out in a four-level biosafety laboratory. After sufficient data, it is decided whether such microorganisms or toxins should be treated in a four-stage or lower-level laboratory. The above is the whole content of "Safety Level Division of Biosafety Cabinet". If you want to know more about the biosafety cabinet consultation, you can contact Shanghai Bashu Industrial Co., Ltd. at any time!
There are mainly the following parts:
1. Sampling swab with disposable sterile plastic rod/rayon head
2. Sterile sampling tube containing 3ml of virus maintenance solution (gentamicin and amphotericin B are selected to better inhibit the fungus in the sample. Avoid the human sensitization reaction that may be caused by penicillin in the traditional sampling solution.)
In addition, there are additional parts such as a tongue depressor, a biosafety bag, etc.
Intended to use
1. It is used for monitoring and sampling of infectious pathogenic microorganisms by disease control departments and clinical departments.
It is suitable for sampling of influenza virus (common influenza, highly pathogenic avian influenza, H1N1 influenza virus, etc.), hand, foot and mouth virus and other types of viruses. It is also used for sampling of Mycoplasma, Chlamydia, Ureaplasma, etc.
2. It is used to transport nasopharyngeal swab samples or tissue samples from specific parts from the sampling site to the testing laboratory for PCR extraction and testing.
3. It is used to preserve nasopharyngeal swab samples or tissue samples from specific parts for necessary cell culture.
The virus sampling tubes are loaded with infectious substances, and some are even highly pathogenic substances. Therefore, the requirements for packaging containers are very strict, and three requirements must be met at the same time:
1. The safety of transportation.
Ensure that the sample does not leak during transportation. Sampling tubes that comply with WHO regulations and biosafety regulations.
2. The security of preservation.
Ensure that the sample does not leak during storage. Sampling tubes that comply with WHO regulations and biosafety regulations.
3. The validity of the sample.
Make sure that the sampling tube itself will not have a toxic effect on the sample.
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