Introduction
3
Statement on Cross-contamination
The risk of cross contamination resulting from the use of a QuantiFit2 is very minimal. Fit Testing
itself
does not
increase or decrease a person’s risk of exposure to any virus or illness. The real
threat is coming into close contact with an infected person no matter the location or activity.
The QuantiFit2 does not trap air in its system either before, during, or after a fit test. The
QuantiFit2 does not push air into the mask. The QuantiFit2 pulls air away from the test subjects
’
respirator and vents it out of the system. This means that the chances of contaminated air being
in the system are, at worst, no more likely than contaminated air being in the surrounding
environment. If an infected person were to be fit tested, there is no more risk of contaminated
air being trapped and subsequently released on a succeeding fit test than there is just by
walking into the fit test area.
The QuantiFit2 and accessories are subject to surface contamination like any item in the test
area. Before and after fit test steps, when the test subject is wearing a respirator, his or her
inhalation is coming through inlets in the OHD adapter kit, and most of the exhalation should
travel through the exhalation valve and out of the respirator. There are many potential respirator
and adapter configurations. The chance could exist in a configuration that exhaled breath could
contact internal areas of an adapter kit. If it is suspected this has happened, disinfection would
be appropriate.
For protection against the transference of surface contamination, all possibly contaminated
surfaces the operator or subjects may contact need to be disinfected. This includes the
QuantiFit2 and accessories. The adapter kits may be cleaned either by immersion, spray, or wipe
from an EPA approved disinfectant as these have been shown to efficiently inactivate over 99%
of microorganisms (to include COVID-19) within a minute. The adapter should be dry before use
in a fit test. The QuantiFit2 tubing should be carefully wiped down with an EPA approved
disinfectant.
If there is a threat of contamination, the fit test operator should take precaution when carrying
out fit testing according to the guidance provided by the CDC.
If respirators are shared for fit testing, the fit test operator should follow
OSHA 1910.134
Appendix B-2 Respirator Cleaning Procedures
or the manufacturer’s guidelines for the disinfection
of the respirator to avoid any cross contamination.
See
for an air-flow diagram with Controlled Negative Pressure and the
QuantiFit2 system.
Summary of Contents for QuantiFit 2
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