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B. Replaceable Particulate Filter draw air through the filter. The inhalation
Respirators process, even under the best of circumstances,
will allow some contaminated air to leak into the
Half-Mask Replaceable Particulate facepiece.
Filter Respirator
The half-mask respirator also meets CDC 3. Communication may be difficult.
requirements. This respirator has single or dual
filters made of the same material as the N, R, and P 4. The respirator cannot be used in areas where a
disposable respirators (HEPA filters can also be sterile field is required (surgical suite).
used). Most manufacturers produce more than one Full Facepiece Replaceable Particulate
size. A face shield may also be used in conjunction Filter Respirator
with a half-mask particulate filter respirator for
protection against body fluids. The full facepiece respirator also meets CDC
requirements for respiratory protection against
exposure to TB. The respirator can be equipped
with the N, R, or P filters (HEPA filters can
also be used). It is also manufactured in more
than one size.

Advantages
1. The respirator provides a better seal than
the half-mask and with HEPA or 100 series
filter is more protective.

2. The respirator is durable.

Half-Mask Replaceable Particulate Filter Respirator. 3. The respirator provides eye protection.

Photo (left) courtesy of Neoterik Health Technologies
Inc. Photo (right) courtesy of NIOSH. Disadvantages
1. The respirator cannot be used in areas
where a sterile field is required.
NOTE: Manufacturer A’s small size is not
necessarily the same as Manufacturer B’s small size. 2. The respirator must be inspected, cleaned,
and repaired.
Advantages
1. The respirator is lightweight and does not 3. The respirator is a negative-pressure device
restrict mobility. using the suction produced by inhalation to draw
air through the filter. The inhalation process, even
2. The respirator is made of rubber or elastomer
and is durable. Only the filters need to be
replaced when necessary.

Disadvantages Full Facepiece
1. The respirator must be routinely inspected, Replaceable
cleaned, disinfected, and repaired (See Step 7). Particulate Filter
Respirator.
2. The respirator is a negative-pressure device Photo courtesy of
using the suction produced by inhalation to NIOSH.

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