What is the purpose of fit testing in respiratory protection programs?

The purpose of fit testing in respiratory protection programs is to ensure that the respirator fits the user properly. A secure seal is crucial for the respirator to function effectively, as it helps prevent inhalation of hazardous substances into the lungs. Proper fit ensures that the respirator can achieve the prescribed level of protection specified for the particular environment and type of hazards the employee may encounter.

Fit testing can involve qualitative methods, where a wearer is exposed to a test agent, or quantitative methods that measure the leakage of the test agent into the respirator. This evaluation ensures that the selected respirator provides an adequate barrier against contaminants and that it is appropriate for the wearer’s specific facial characteristics. Proper fit enhances not only the effectiveness of the respiratory protection but also the overall safety and health of workers in potentially hazardous environments.