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Qualitative Fit Test (QLFT)

~1 Hour
2 Years Valid

Qualitative fit testing is a pass/fail testmethod that uses your sense of taste or smell, or your reaction to an irritantin order to detect leakage into the respirator facepiece. Qualitative fittesting does not measure the actual amount of leakage. Whether the respiratorpasses or fails the test is based simply on you detecting leakage of the testsubstance into your facepiece.

Qualitative fit testing is normally used for half-mask respirators -those that just cover your mouth and nose. Half-mask respirators can befiltering facepiece respirators - often called "N95s" - as well aselastomeric respirators.


OSHA Accepted Fit Test Methods:

Isoamyl acetate (banana smell); only for testing respirators with organic vapor cartridges.
Saccharin (sweet taste); can test respirators with a particulate filter of any class.
Bitrex® (bitter taste); can also test respirators with particulate filters of any class.
Irritant smoke (involuntary cough reflex); only for testing respirators with level 100 particulate filters.
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