Prevent workers from being harmed by physical, chemical, biological and other harmful factors.
Personal protective equipment refers to equipment and supplies used to prevent workers from being harmed by physical, chemical, biological and other harmful factors. In biosafety laboratories, these equipment and supplies are mainly a physical barrier that protects experimenters from the dangers of exposure to biohazardous substances (aerosols, splashes, accidental inoculation, etc.).
Involved protective parts: eyes, head and face, body, hands, feet, ears, respiratory tract. Corresponding protective equipment includes: glasses (safety glasses, goggles), masks, face shields, gas masks, hats, protective clothing, gloves, shoe covers, hearing protectors, etc. Laboratory workers should choose personal protective equipment based on operations at different biosafety levels.
Classification of biological safety cabinets
Biological safety cabinets can be divided into level one, level two, and level three to meet different biological research and epidemic prevention requirements. The first-level biological safety cabinet protects workers and the environment without protecting samples. Its airflow principle is the same as that of a commonly used fume hood in the laboratory. The difference is that the exhaust port is equipped with a HEPA filter.
Level 2 biological safety cabinets are currently the most widely used cabinet type and can provide protection for workers, the environment and samples.
Level 3 biosafety cabinets are designed for Level 4 laboratory biosafety levels. The cabinet is completely airtight. Workers operate through gloves connected to the cabinet. It is commonly known as the glovebox. Experimental items The safety cabinet is entered and exited through the double-door pass box to ensure no contamination, which is suitable for high-risk biological experiments.