64 Chapter 6
Hair or foreign
material in exhalation
valve
Make sure the exhalation valve is clear. A
single hair can make a big difference.
DO NOT allow the individual to smoke for
at least 30 minutes prior to the fit test.
Suspiciously High Fit Factors
When fit testing full or half face respirators in most ambient
environments, fit factors greater than 100,000 are considered
suspicious, and should be verified using the Real-Time FitCheck
Mode after the fit test has been completed. While still donning the
respirator, have the person being fit tested purposefully break the
seal of the respirator to their face by sliding an object (i.e., a pen or
their finger) through the sealing surface. Even with a small leak, the fit
factor calculated should be very low. If the real-time calculated fit
factor drops in value as expected, the reported high fit factors are
valid. If the real-time calculated fit factor does not drop in value when
the seal is broken, there may be a block or kink in the respirator
sample or respirator adapter tubing, usually as it enters the respirator.
Record/Print Results
Use FitPro Ultra Fit Test Software to view, save, and print test results.
The software will use the default printer of your tablet or computer to
print a fit test report.