OHD is the home of the new Quantifit Respirator Fit Tester. Test your respirator fit with a 5-step protocol in as little as 2-3 minutes. Not only the fastest, but also the most accurate method of fit ...

Complete fit test in 2-3 minutes! Test in any environment with no consumables using OHD's Controlled Negative Pressure Technology. Within seconds of testing, the Quantifit can determine whether the ...

In today’s world, a single fingerprint can be the difference between multiple deaths and a man locked away, safely away from the public. A Florida man has been charged with sending 14 homemade pipe ...

First responders must wear respirators, and the OHD Quantifit accurately measures leaks to make sure the face-to-face piece seal is offering adequate protection for the user. When it comes to ...