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 ...

TSI Incorporated introduces the Portacount Pro and Pro+ respirator fit testers, which offer fast, simple, easy-to-use, stand-alone operation and are OSHA-compliant for all respirators. These fit ...

The American Industrial Hygiene Foundation partnered with TSI to distribute the remaining production stock of PortaCount TM Plus Respirator Fit Tester Model 8020s that had recently been retired.

SHOREVIEW, Minn., Sept. 28, 2019 /PRNewswire/ -- OSHA has accepted two newly Modified Ambient Aerosol Condensation Nuclei Counter (CNC) Quantitative Respirator Fit Test Protocols. The new protocols go ...

The PortaCount Fit Tester, model 8040 and 8048, provide users with assistance across the entire respiratory protection program, from training to compliance. New features like FitCheck Mode and test ...

UC Davis Health is assessing the integrity, performance of the respirator masks after they are decontaminated The goal is to establish a backup supply in the face of high demand during the coronavirus ...

Occupational Health & Safety Industrial Hygiene Award logo · GlobeNewswire Inc. Shoreview, MN, May 12, 2026 (GLOBE NEWSWIRE) -- TSI Incorporated announces that TSI Link™ for Respiratory Protection won ...

SHOREVIEW, MN - TSI, the industry leader in the design and production of quantitative fit testing technology and biohazard detection equipment announces the release of their Mask Integrity Test ...

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 ...

Pursuant to 29 C.F.R. § 1910.134(f) employees are required to be fit tested prior to wearing tight-fitting respirators and the fit test administered must be using an OSHA-accepted fit test protocol.