15
Size Selection
G1 Industrial SCBA
US
3
Size Selection
Regardless of facial dimensions and respirator sizing charts, an actual respirator fit test, either quali-
tative or quantitative must be performed to ensure the correct respirator size selection.
(1) Fit test the respirator size relative to your facial features and dimensions. The safety adminis-
trator or program manager might assist in selecting the initial size to try.
(2) Carefully don the mask and conduct a negative pressure seal test. See donning instructions for
procedure.
(3) If the facepiece does not pass the negative pressure seal test or feels uncomfortable, try the next
nearest size relative 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 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 the SCBA.
3.1
Respirator Fit Test
WARNING!
The user must perform a respirator fit test (Quantitative Test or Qualitative Test) and follow all warn-
ings and limitations specified. Failure to do so can result in serious personal injury or death.
A qualitative or quantitative respirator fit test must be carried out routinely for each wearer of this respi-
rator to determine or confirm the amount of protection that the respirator provides.
Quantitative Test
If a quantitative fit test is used, a fit factor of at least 500, based on ambient aerosol fit test methods
or equivalent, is required before any type of respirator is assigned to an individual.
Qualitative Test
If a qualitative fit test is used, only validated protocols are acceptable. The individual must pass a test
designed to assess a fit factor of at least 500.
Use Quik Chek Kit (P/N 805078) to perform fit testing and following instructions provided with the kit.
The fit test kit includes an adapter and instructions. Canister sold separately. Be sure the probe does
not contact the face during fit testing. Failure to do so can result in false protection factor readings.
