Train the tester

This enables the attendees to undertake their own management of face fit testing in the workplace.

What do our training courses include?

  • Course lasts approximately 4 hours

  • Includes a practical demonstration of the face fit testing process

  • Course notes included and a short multiple choice test

  • 2 year "Certificates of Attendance" issued upon successful completion

  • Certification allows you to conduct your own internal face fit testing on employees for FFP disposables and cartridge half masks

Or you can leave it to us as we provide a fitting service


Quantitative tests can be used to fit test all types of tight-fitting masks including FFPs (disposable), and half and full-face masks. Quantitative tests can give an objective assessment of facial fit and provide a direct numerical result called a Fit Factor. The most widely used quantitative method for RPE fit testing is the Particle Counting method, a title ascribed to the TSI Portacount.

The Portacount measures the number of ambient particles inside and outside a face piece and proves a numerical result which is the ratio of the two over a given test period. For more details on test exercises and pass levels go to the HSE INDG 479 protocol. Testing can be conducting based on a half day’s testing rate (3-10 tests) or full day’s testing rate (10-16 tests). A certificate of the face fit test results is provided for each test.


Qualitative tests rely on a wearer’s subjective assessment of face seal leakage. These methods, during a series of test exercises, use the wearer’s sense of taste to detect face seal leakage of the test agent. Qualitative tests are subject to problems with sensitivity, lack of objectiveness and inability to provide a numerical result. For these reasons, qualitative tests can only be employed for fit testing FFPs (disposable) and half masks.

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