Qualitative fit testing relies on which method to determine pass/fail?

Qualitative fit testing relies on which method to determine pass/fail?

• A. Qualitative fit testing relies on taste, odor, or irritation sensations
• B. Qualitative fit testing uses instruments to measure fit
• C. Qualitative fit testing uses numerical pass/fail scoring
• D. Qualitative fit testing does not exist

Answer: (A)

Qualitative fit testing is based on the wearer’s senses—taste, odor, or irritation—to decide pass or fail. In this method, a test agent such as saccharin (which tastes sweet), Bitrex (bitter), or an irritant aerosol is released around the respirator seal. If the wearer detects the agent by taste, smell, or irritation at any point, the fit is deemed unacceptable and fails. If no detection occurs during the test, the fit is considered acceptable and passes. Because it depends on subjective sensory detection rather than objective measurements, qualitative testing is less precise than quantitative fit testing, which uses instruments to measure leakage and provide a numerical fit factor. The idea that qualitative fit testing doesn’t exist is incorrect, and the approach that uses instruments describes quantitative testing, not qualitative.

Qualitative fit testing is based on the wearer’s senses—taste, odor, or irritation—to decide pass or fail. In this method, a test agent such as saccharin (which tastes sweet), Bitrex (bitter), or an irritant aerosol is released around the respirator seal. If the wearer detects the agent by taste, smell, or irritation at any point, the fit is deemed unacceptable and fails. If no detection occurs during the test, the fit is considered acceptable and passes. Because it depends on subjective sensory detection rather than objective measurements, qualitative testing is less precise than quantitative fit testing, which uses instruments to measure leakage and provide a numerical fit factor. The idea that qualitative fit testing doesn’t exist is incorrect, and the approach that uses instruments describes quantitative testing, not qualitative.