What does it mean if air escapes around the face mask when exhaling during a respirator test?

When air escapes around the face mask during an exhalation test, it indicates that the mask is not forming a proper seal against the wearer’s face. Proper fitting is crucial for respirators, especially in environments where exposure to hazardous materials, such as asbestos, is a concern. If air is leaking, it means contaminants can enter the breathing zone, rendering the respirator ineffective.

A well-fitted mask should create a tight seal that prevents air from escaping around the edges. Therefore, the presence of air escaping suggests that the size or shape of the mask does not match the contours of the wearer’s face, leading to an improper fit. This emphasizes the importance of selecting a mask that is appropriately sized and designed for the individual’s face profile to ensure maximum protection from airborne contaminants.