OHD: Protecting the
World's Workforce

As OHD passionately protects the health of the world's workforce, we are constantly expanding our presence throughout the world. With the new International Standards on Mask Fit Testing (ISO 16973-3), the Quantifit is rapidly becoming the gold standard on every continent, in every country. Please reach out to us at Regulations@OHDUSA.com so we can help you with establishing your own Respiratory Protection Program in your country!

Want to learn more about ISO? Download a copy of the ISO Fit-Testing Procedures by clikcing the button below. You'll find the first edition of the ISO Fit-testing procedures, as it appears from Part 3 of code 16975-3:2017(E). You'll learn about the fit-test procedures, interference concerns, how often to fit-test, advantages of controlled negative pressure and much more. Read abot the benefits of adoption ISO's standards for fit-testing.

Download the ISO Fit-Testing Procedures