We have passionately been protecting the health of the world’s workforce since1992 with our quantitative respiratory fit tester, the OHD Quantifit. You can download your copy of the ISO …

Contact OHD OHD Support 2687 John Hawkins Pkwy, Hoover AL, 35244 United States of America email: [email protected] phone: (205) 980-0180 fax: (205)980-5764 @2016 Occupational Health …

The Chicago Fire Department implemented the OHD Quantifit for NFPA compliant SCBA fit testing. The Quantifit has increased our speed, accuracy, and ability to manage reports using OHD’s FitTrack …

OHD created a device that uses air as the test agent, the Quantifit. Our patented Controlled Negative Pressure (CNP) technology generates a challenge pressure that is equivalent to the harshest of …

The OHD demonstration process seeks to provide transparency and leave you feeling prepared to make an informed decision regarding your fit testing needs. The OHD Quantifit provides a fast, safe and …

OHD offers top-quality equipment and services to the law, fire, industrial and occupational health industries.

OHD is committed to protecting and respecting your privacy, and we’ll only use your personal information to administer your account and to provide the products and services you requested from us.

The ISO has written OHD into the standards for fit-testing procedures. Discover the benefits of writing 16975-3 into your country's standards.

There are two essential technologies for respirator fit-testing: Ambient Aerosol, which is particle-counting aerosol technology, and Controlled Negative Pressure (CNP) by OHD.

OHD offers top-quality equipment and services to industry leaders in the law, fire, industrial and occupational health industries. These products range from vision and hearing to OHD FitTesters, …