MSA 10086004, Operation And Instructions Manual, Page: 9 / 32

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 selection.
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 suc-
cessfully passing a Respirator Fit Test, either qualitative or
quantitative. If the respirator passes a negative pressure
seal test but DOES NOT pass a Respirator Fit Test, try the
next nearest size.
Once the proper size is selected, the respirator must pass
a negative pressure seal test every time the facepiece 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 negative pressure seal
test before the user attempts to enter a toxic atmosphere.
The facepiece will not furnish protection unless all inhaled
air is drawn through a suitable canister.
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 car-
ried out routinely 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.
Quantitative Test – If a quantitative fit test is used, a fit
factor of at least 2000, based on ambient aerosol fit test
methods or equivalent, is required before any type of res-
pirator is assigned to an individual.
Qualitative Test – If a qualitative fit test is used, only vali-
dated protocols are acceptable. The individual must pass
a test designed to assess a fit factor of at least 2000.
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.
9 TAL 803 (L) Rev. 0 - 10086002