A laboratory ventilation system should be designed to maintain what pressure within the lab?

A laboratory ventilation system should be designed to maintain negative pressure within the lab to ensure safety and containment. Negative pressure creates a situation where air flows into the laboratory from adjacent spaces, preventing any contaminants or hazardous materials inside the lab from escaping into the surrounding areas. This is especially critical in laboratories that work with dangerous pathogens or chemicals, as it effectively helps to protect both laboratory personnel and the environment.

Maintaining negative pressure also allows for effective air dilution and removal of fumes, vapors, and particles generated during experimentation, minimizing the risk of exposure. Additionally, in situations where lab personnel are working with sensitive equipment or conducting experiments that could release harmful substances, a negative pressure environment is crucial for maintaining safety protocols and compliance with health regulations.