Certified Safety Professional Exam 2026 – 400 Free Practice Questions to Pass the Exam

Biosafety level 4 (BSL-4) laboratories are designated for work with the most dangerous pathogens, which pose a significant risk of aerosol transmission and for which there are no available vaccines or treatments. One of the critical requirements within these laboratories is the installation of an air lock between the laboratory and any public or less controlled areas. This air lock serves as a containment measure, preventing pathogens from escaping into the external environment and ensuring that personnel can enter and exit safely without compromising the laboratory’s biosecurity.

The design of BSL-4 laboratories is meticulous in ensuring that all biosafety protocols are in place to protect both the workers and the public. The air lock functions to maintain a controlled atmosphere, which is essential for handling highly infectious agents. This additional layer of security reflects the laboratory’s commitment to stringent safety measures that align with the nature of the work conducted within.

By focusing on these critical containment features, BSL-4 laboratories ensure that they can operate safely while engaging with some of the most challenging biological threats.