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Quantitative Respirator Fit Testing

Protecting Workers

Respirator fit testing

Respirators protect workers from breathable hazards in the workplace. Fit testing evaluates the seal between a respirator and the face, identifying gaps or leaks that put workers at risk. Fit test results confirm if a mask will provide the right level of on-the-job protection needed.

Quantitative fit testing gives users an objective and numeric measurement of respirator fit. These results allow safety professionals to make the best-informed decisions to protect their teams. In the U.S., regulatory groups such as OSHA and NFPA now require quantitative fit testing for many respirators. In the UK, fit testing with the PortaCount® Respirator Fit Tester is the only method that is HSE compliant for all respirators, including FFP1, FFP2 and FFP3 disposable respirators.


Since the launch of the Model 8010 in 1987, TSI has been the leader in respirator fit testing. PortaCount Fit Testers have helped protect countless workers in hospitals, manufacturing plants, construction sites, police and fire stations, and other workplaces around the world.

With the launch of the latest PortaCount Fit Tester, Models 8040 and 8048, TSI continues to lead and redefine what a fit test instrument can be to a respiratory protection program.


The PortaCount® Respirator Fit Tester supports respiratory protection programs throughout the entire fit test process; from training and mask selection, through compliance.

TSI has redesigned every aspect of the PortaCount Fit Tester’s FitPro™ Ultra Software. An all new user interface and industry-first features combine to create the most powerful fit test instrument available. From touchscreen tablets to PC laptops, the software is easy to use and similar to applications on your own personal devices.

Choose the most trusted fit test instrument to increase your staff’s safety, and improve your program’s efficiency and productivity.

To learn more about TSI's PortaCount Fit Testers, click on the products below or contact a TSI representative.