SIZE SELECTION
Regardless of facial dimensions and respirator sizing
charts, an actual respirator fit test, either qualitative or
quantitative must be performed to ensure the correct res-
pirator size selected.
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 mask and conduct a negative pressure
seal test. See donning instructions for procedure.
If the facepiece does not pass the Negative Pressure Seal
Test or feels uncomfortable, try the next nearest size rela-
tive to your face.
Passing the Negative Pressure Seal Test does not verify
the size is correct. The size selected must be verified by
successfully passing a Respirator Fit Test, either qualita-
tive or quantitative. If the respirator passes a Negative
Pressure Seal Test but DOES NOT pass a Respirator Fit
Test, the next nearest size relative to your facial features
and dimensions should be tried.
Once the proper 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.
If other than facial seal leakage is detected, the condition
must be investigated and corrected before another test is
made.
The facepiece must also pass the tightness test before
the user attempts to enter an toxic atmosphere.
The mask 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.
7
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