The biosafety cabinet is used to protect the operator, the laboratory environment and the experimental materials from the infectious experimental materials such as primary cultures, bacterial strains and diagnostic specimens, so as to avoid being exposed to the above-mentioned operation process. May be designed for infectious aerosols and spills. When working with liquids or semi-fluids, such as shaking, pouring, stirring, or dropping liquids on a solid surface or another liquid, aerosols are possible. Streak the agar plate, inoculate the cell culture bottle with a pipette, use a multi-channel sampler to transfer the suspension of infectious reagents to the microplate, homogenize and vortex the infectious material, and infect the infection Infectious aerosols may be generated by these laboratory operations when centrifuging sexual fluids and performing animal operations. Because the naked eye cannot see aerosols with a diameter of less than 5 μm and tiny droplets with a diameter of 5 to 100 μm, laboratory staff are usually not aware that particles of this size are forming and may inhale or cross-contaminate other materials on the work surface. . It has been shown that the correct use of biological safety cabinets can effectively reduce laboratory infections and cross-contamination of cultures due to aerosol exposure. Biological safety cabinets can also protect the environment. Over the years, the basic design of biological safety cabinets has undergone several improvements. The main change is the addition of HEPA filters in the exhaust system. For particles with a diameter of 0.3 μm, the HEPA filter can retain 99.97%, while for larger or smaller particles it can retain 99.99%. This characteristic of the HEPA filter allows it to effectively trap all known infectious agents and ensure that the air discharged from the safety cabinet is completely free of microorganisms. The second improvement in the design of the biological safety cabinet is to transport the HEPA filtered air to the work surface, thereby protecting the items on the work surface from contamination. This feature is often referred to as the protection of subjects. These basic design changes have improved the three levels of biological safety cabinets. For people who travel or travel frequently, if you don't like the Toothbrush in your hotel and like to bring your own toothbrush, a toothbrush head is very necessary. It can protect your toothbrush from deformation or ash. It is also very useful for household toothbrushes. As is known to all, toilet is a place where bacteria are gathered, so toothbrush cover is a very important protection tool. Toothbrush Head Cover,Toothbrush Head Cover Holder,Toothbrush Protector Cover,Toothbrush Head Cover Case Cap Yangzhou Special Care Daily Products Co., Ltd , https://www.justspecialcare.com
Biological safety cabinet effectively reduces cross-contamination of culture
Shanghai Haozhuang Instrument Co., Ltd. has developed the Hao Zhuang (LNB) brand biological safety cabinet, which is energy-saving and environmentally friendly, leading the country. Professional manufacturing is more secure and affordable