Is there a need to do fit test for n95 respirator?

Yes, fit testing for N95 respirators is essential to ensure an effective seal between the respirator and the wearer's face. A proper fit minimizes the risk of airborne contaminants entering the respirator, thereby enhancing the user's protection. Fit testing should be conducted initially and periodically, especially if there are changes in the user's facial structure or if a different model of respirator is used.