Have you been waiting for the right time to upgrade your fit tester from the TSI PortaCount® to the revolutionary OHD Quantifit®? Aren't you tired of the inconvenience of sometimes having to ensure or generate particles in a...

OHD recently took part in a city wide training for the Chicago Fire Department. OHD, along with NIPSTA (Northeastern Illinois Public Safety Training Academy) completed a "Train the Trainer" session with the OHD Quantifit to...

The OHD Quantifit: ohdusa.com/products/quantifit

Below is a recent OHD Quantifit® customer testimonial sent in by an onsite workplace safety solutions company based out of California:

The Basics of Fit Testing