What must be done to a tight-fitting respirator to ensure proper safety?

A tight-fitting respirator must be fit-tested to the individual user to ensure proper safety because the effectiveness of the respirator relies heavily on achieving an adequate seal against the face. Fit testing assesses how well the respirator conforms to the user’s facial features, which is essential for preventing contaminants from bypassing the respirator.

Different individuals have unique facial structures, and without a proper fit, airborne contaminants can enter through gaps, potentially exposing the user to harmful substances. The fit testing process helps identify the correct size and type of respirator for the specific user, ensuring they receive the intended level of protection when working in environments where exposure to hazardous fumes or particles is a risk.

While regular cleaning is important for maintaining hygiene, and leak testing can help identify issues, the initial fit of the respirator is the most critical factor for safety.