The Qualitative Face Fit Testing is a test done by a qualified Fit 2 Fit Tester.
Qualitative fit testing relies on the delegate’s taste response to detect face seal leakage of a strong-tasting challenge agent (Bitter or Sweet).
Qualitative fit tests require the same seven-test exercise protocol as other methods as described in INDG 479 but can only be employed for fit testing of filtering facepieces (disposable masks) and half masks, not full-face masks.
This method involves a ‘Sensitivity Test’ and ‘Fit Test’ step.
Once the delegate has completed the test the tester will give the results.
Delegates must be clean shaven and not eaten or smoked for a minimum of 30 minutes prior to being face tested.