What is the main function of respirators that are marked with a TC code?

The main function of respirators marked with a TC code is to show their compliance with safety standards. The TC code represents a certification issued by the National Institute for Occupational Safety and Health (NIOSH) in the United States. It signifies that the respirator has undergone rigorous testing and meets specific performance and safety criteria established for the protection of workers in various environments.

This certification helps ensure that users can rely on the respirators to provide an adequate level of respiratory protection against inhaling harmful substances, including dust, fumes, and airborne pathogens. Understanding this certification is crucial for public health professionals and individuals working in hazardous environments, as it helps them select appropriate respiratory protection based on established safety standards.