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The Automated Filter Tester Model 8130A continues to be the best solution for testing particulate respirator filters, disposable filtering face pieces, and a wide assortment of filter media. TSI filter testers have been used in quality control and manufacturing by leading...

TSI returns to UltraFacility 2026 as a Bronze Sponsor, Exhibitor, and Speaker. Discover the TSI Nano LPM™ System detect nanoparticles down to 10 nm in semiconductor ultrapure water, closing the critical metrology gap and empowering data-driven decisions.

Accessory for certain AeroTrak™ products

Trade in your respirator fit tester for a $2,000 credit toward the latest PortaCount Respirator Fit Tester

Are you interested in particle number concentration or other applications for Water-based Condensation Particle Counters (WCPCs)? We can send you a free poster to display in your office or lab.