If I can get a worker with facial hair to pass a quantitative fit test using a PortaCount, can I then allow that worker to wear the full facepiece without him needing to shave? The short answer?

TSI’s PortaCount Respirator Fit Tester delivers an objective fit test for any respirator, including all N95s, in less than two and a half minutes. Using OSHA’s newly modified CNC protocols, fit tests ...

The PortaCount Fit Tester Model 8048 provides a consistent and objective testing experience across all respirator types, including N95 filtering facepieces. FitCheck Mode shows in real-time how ...

Shoreview, MN, May 14, 2025 (GLOBE NEWSWIRE) -- TSI Incorporated, a global leader in Respirator Fit Testing, proudly announces the launch of the TSI Tempo™ Program, a unique and flexible solution, ...

Quantitative fit testing is the preferred testing method. The ambient aerosol condensation nuclei counting (CNC) method, using a Portacount® Plus instrument, has been selected as the quantitative fit ...

As the world is responding to the COVID-19 outbreak, fit testing respirators for healthcare workers and first responders remain vital to respiratory protection programs to reduce exposure to the ...

Shoreview, MN, May 12, 2026 (GLOBE NEWSWIRE) -- TSI Incorporated announces that TSI Link™ for Respiratory Protection won the highly respected Occupational Health and Safety Industrial Hygiene Award in ...

The Occupational Safety and Health Administration (OSHA) on Sept. 25 issued a final rule approving two additional quantitative fit testing protocols for inclusion in its Respiratory Protection ...