A Biological Safety Cabinet (BSC) is a specialized enclosure designed to protect users, the environment, and the samples being handled from exposure to harmful biological agents. It uses a combination of airflow and filtration systems to create a sterile workspace, ensuring that airborne contaminants do not escape into the laboratory or the surrounding area. BSCs are classified into different types based on their design and level of protection, including Class I, Class II, and Class III. Each class offers varying degrees of safety and is used for different applications, such as working with pathogens or cell cultures. Proper use and maintenance of BSCs are essential for laboratory safety.