What is the purpose of a qualitative respirator fit test?

• A. Ensures the respirator forms a proper seal on the face.
• B. Checks the filter efficiency.
• C. Tests dexterity.
• D. Measures comfort.

Answer: (B)

The main idea is whether the respirator forms a proper seal on the face. A qualitative fit test checks for leakage around the seal by having the wearer perform typical motions while a detectable agent (like a taste or odor) is present outside and inside the respirator. If the agent is detected inside, the seal isn’t adequate and the fit fails; if it isn’t detected, the seal is considered sufficient for that wearer. This test focuses on preventing air from bypassing the filter, not on how well the filter itself removes particles. Filter efficiency is assessed separately, while fit tests determine if the respirator actually seals to the face.