32
21. Appendix - Performing a Quantitative Fit Test
A fit test must be performed during initial selection of a respirator, or whenever the user’s face changes shape (for
instance due to weight gain or loss) and at least annually. The test is performed using a machine that compares the
concentration of particles in the mask with that in the surrounding atmosphere. One example is the PortaCount
Respiratory Fit Tester, made by TSI Incorporated. Mask fitting must be carried out by a specialist / designated
mask fitter.
PERFORMING A QUANTITATIVE FIT TEST WITH A HALF MASK
To carry out a quantitative fit test with a Half Mask your specialist mask fitter will require PAF-0025 PortaCount
Adaptor and the accompanying S005-7174 Quantitative Fit Test Instructions. The PortaCount Adaptor is an
accessory that fits between the mask and the exhalation valve and allows the air in the mask to be sampled. It
comes with detailed instructions on how to carry out a quantitative fit test.
PERFORMING A QUANTITATIVE FIT TEST WITH A FULL FACE MASK
CleanSpace Full Face Masks come with a built-in sampling port and a sampling ball accessory which make it quick
and easy to carry out a fit test. To set up for the test, do the following. Firstly, we recommend you remove the
orinasal piece as this makes access easier.
Fit the Sensing Ball by pushing it into the
socket. There are small fins on the stem of
the ball to ensure the correct orientation.
After completing these steps, refit the orinasal piece, don the respirator and complete the fit test following the
protocol provided with the fit testing machine. A CleanSpace respirator with the Power On should achieve a fit factor
above 1000. If your result is below 1000 adjust the mask and try again.
To Next Page
Loading...
