The main purpose of a fit test is to ensure the wearer chosen respirator size fits properly. Which option describes that?

• A. A fit test determines the right size respirator for the user
• B. A fit test measures breathing rate
• C. A fit test checks filter color
• D. A fit test checks strap length only

Answer: (A)

Ensuring the respirator fits the wearer properly is crucial for effective protection. A fit test specifically checks whether the chosen respirator size (and model) can form a good seal on the wearer’s face. If the seal leaks, the wearer isn’t protected even if the respirator is otherwise functioning. The test helps identify the right size for that individual. It is not about breathing rate, filter color, or strap length alone. So the description that a fit test determines the right size respirator for the user best captures its purpose.