SIZE SELECTION
Regardless of facial dimensions and respirator sizing
charts, an actual respirator fit test, either qualitative or
quantitative must be performed to ensure selection of the
correct respirator size.
Fit test the respirator size relative to your facial features
and dimensions. The Safety Administrator or Program
Manager might assist in selecting the initial size to try.
Carefully don the respirator and conduct a Negative
Pressure Seal test. See donning instructions for proce-
dure.
If the respirator does not pass the Negative Pressure Seal
Test or feels uncomfortable, try the next size. If other than
facial seal leakage is detected, the condition must be
investigated and corrected before another test is made.
Passing the Negative Pressure Seal Test does not verify
that the size is correct. Size selection must be verified by
successfully passing either a qualitative or quantitative
Respirator Fit Test. If the respirator passes a Negative
Pressure Seal Test but DOES NOT pass a Respirator Fit
Test, try the next size.
Once the correct size is selected, the respirator must pass
a Negative Pressure Seal Test every time the mask is
donned to ensure proper fit before using the respirator.
The respirator must also pass the tightness test before the
user attempts to enter a toxic atmosphere.
The respirator will not furnish protection unless all inhaled
air is drawn through a suitable canister/cartridge(s).
RESPIRATOR FIT TEST
The user must perform a respirator fit test
(Quantitative Test or Qualitative Test) and follow all
warnings and limitations specified. Failure to do so
can result in serious personal injury or death.
A qualitative or quantitative respirator fit test must be rou-
tinely carried out for each wearer of this respirator to
determine or confirm the amount of protection that the
respirator provides. The fit test method chosen may
impact the maximum use concentration.
Respirator fit tests are explained fully in the American
National Standard Practices for Respiratory Protection,
ANSI Z88.2-1992 which is published by the American
National Standards Institute, 11 West 42nd Street, New
York, New York, 10036 and Occupational Safety and
Health Standards, OSHA 1910.134, which is published by
the Occupational Safety and Health Administration, 200
Constitution Avenue, NW, Washington DC, 20210.
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