Biosafety cabinets are widely used in food hygiene, medical care, disease prevention and control, environmental monitoring, biopharmaceuticals and various biological laboratories. Mainly used to ensure biological safety and environmental safety, belonging to the measurement of people's livelihood. The testing of biosafety cabinets was carried out in foreign countries 30 years ago, so the current standards mainly refer to the standards of the European Union or the United States. However, in China, there is no uniform testing standard for biosafety cabinets. The testing methods of biosafety cabinets in China are very confusing, including the standards of the Food and Drug Administration, the standards of the Ministry of Construction, the standards of the European Union and the United States, or the enterprise standards of various manufacturers, so it is quite confusing.
Biosafety cabinets are divided into primary, secondary and tertiary levels, which can meet various requirements of biological research and health and epidemic prevention. The first-class biosafety cabinet is used to protect workers and the environment, but the disadvantage is that it does not protect samples. The second-level biosafety cabinets are the most extensive, and all the second-level biosafety cabinets can provide protection for the environment, products and staff. The third-level biosafety cabinet is specially designed for the biosafety level of the fourth-level laboratory, and it is one of the highest safety protection levels. Suitable for high-risk biological experiments.
If the biosafety cabinet is not operated properly in use, it will definitely reduce the defense measures. Therefore, every operator should master the use of biosafety cabinets strictly and skillfully, and don't be at a loss when there is a fault, which will lead to danger, which is very unfavorable.