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Fit-Testing has been a mandatory requirement under the U.K Asbestos Regulations and from November 2002 the new COSHH regulations and associated ACOP require employers of wearers of tight fitting face. Tight fitting face pieces include disposable particulate respirators, half-masks and full-face masks with filters. A fit-Test should also be carried out if you are using powered and airfed respirators.
The port count makes a direct measurement of respirator fit factors. There are no error-including assumptions made to calculate equivalent fit factors. The measurement is made while the person simultaneously performs dynamic moving and/or breathing exercises designed to stress the respirator seal in ways that simulate anticipated workplace activity
Fit Test Procedure