Qualitative fit testing uses a subjective sense of taste or irritation (pass/fail); Quantitative uses instrumentation to measure leakage and provides a numerical fit factor.

Qualitative fit testing uses a subjective sense of taste or irritation (pass/fail); Quantitative uses instrumentation to measure leakage and provides a numerical fit factor.

• A. Qualitative fit testing uses a subjective taste or irritation (pass/fail);
• B. Quantitative fit testing uses instrumentation to measure leakage and provide a numerical fit factor;
• C. Qualitative fit testing is based on equipment measurements;
• D. Quantitative fit testing relies on user opinion of fit.

Answer: (A)

Qualitative fit testing is defined by its reliance on the wearer’s or tester’s senses to decide pass or fail. It uses a detectable taste or irritation to indicate a poor seal, and there’s no numerical measurement involved—it's a simple yes/no result based on perception. This is why the statement describing qualitative testing as using a subjective taste or irritation and producing a pass/fail outcome is the best fit. It captures the essential, practical nature of qualitative testing: no instrumentation, just sensation-based judgment. The other descriptions don’t fit: qualitative testing isn’t based on equipment measurements, and quantitative testing isn’t about user opinion of fit—it's about instrumented measurements that yield a numerical fit factor.

Qualitative fit testing is defined by its reliance on the wearer’s or tester’s senses to decide pass or fail. It uses a detectable taste or irritation to indicate a poor seal, and there’s no numerical measurement involved—it's a simple yes/no result based on perception. This is why the statement describing qualitative testing as using a subjective taste or irritation and producing a pass/fail outcome is the best fit. It captures the essential, practical nature of qualitative testing: no instrumentation, just sensation-based judgment.

The other descriptions don’t fit: qualitative testing isn’t based on equipment measurements, and quantitative testing isn’t about user opinion of fit—it's about instrumented measurements that yield a numerical fit factor.