What is the purpose of a fit check for respirators?

The purpose of a fit check for respirators is to guarantee a tight-fitting seal with no leaks. This is essential because a proper seal ensures that the air the wearer inhales is filtered and free from harmful contaminants. A respirator that does not fit correctly may allow unfiltered air to enter, which can compromise the protection it is designed to provide.

Fit checks are typically performed before using a respirator to confirm that it forms a secure seal against the face. This process helps ensure the respirator functions effectively in protecting the user from airborne hazards. In contrast, assessing comfort, material durability, or filtration efficiency, while important aspects of respirator use and selection, do not address the critical need for an effective seal that is evaluated through a fit check.