52 Chapter 6
Probes for Filtering-Facepiece (Disposable)
Respirators
Disposable respirators can be fit tested by inserting a test probe
through the filter material. The optional TSI Model 8025-N95 Probe
Kit includes disposable probes and insertion tools. Order TSI Model
8025-N95R Probe Refill Kit for additional probes (no tools).
The PortaCount Model 8040 can successfully fit test class-100,
class-99, and P3 disposable respirators. Lower efficiency
disposable respirators such as NIOSH Series 95, FFP2, and FFP1
will usually require use of the PortaCount Model 8048 with
N95-Companion™ Technology.
Inserting a Test Probe in a Disposable Respirator
To perform a quantitative fit test, the PortaCount Fit Tester must draw
an air sample from inside the respirator while it is being worn by the
person being fit tested. The tools, sampling probes and push nuts
contained in the probe kit lets you install a sampling port onto any
disposable filtering-facepiece respirator.
Once a sampling probe has been installed, the
respirator cannot be used for respiratory protection.
Ported respirators that have been modified are for
quantitative fit testing only. Discard (or sanitize) the
respirator after each fit test is completed. Follow the
respirator manufacturer’s recommendations.
1. Choose a location to install the sample probe.
For proper fit testing, the sampling point must be in the “breathing
zone” of the respirator user. For most respirators, this is in the
center of the respirator between the person’s nose and mouth.
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