What is the primary reason for performing a fit test on a new respirator user?

• A. To verify the correct size and seal
• B. To check battery charge
• C. To test the noise level
• D. To measure weight

Answer: (A)

Ensuring the respirator seals to the face is the main idea behind a fit test. The primary reason for performing it on a new user is to verify the correct size and that the facepiece can form a tight seal, so all inhaled air is drawn through the filter rather than leaking around the edges. A good seal is essential for protection; if there’s any gap, contaminants can bypass the filter even if the respirator itself is in good condition. Fit testing can be done qualitatively (taste or smell to detect leaks) or quantitatively (instrument measures leakage) to confirm the seal. It doesn’t assess battery charge, noise level, or weight, as those factors don’t determine whether the respirator provides the intended protection.