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  • OHD
    OHD's patented Controlled Negative Pressure (CNP) Technology directly measures respirator leakage, using air as the only challenge agent No consumables required The unit measures the leak rate (in cc min) by determining the exact amount of air that leaks into the respirator during the fit test
  • OHD: AeroFit and QuantiFit2 Fit Test Devices
    OHD's patented Controlled Negative Pressure (CNP) Technology directly measures respirator leakage, using air as the only challenge agent Complete a full OSHA or ISO fit test in as little as two minutes – no waiting periods for smokers or post-meal testing
  • OHD | Download the ISO Fit-Testing Standards
    OHD is leading the standard in Respiratory Fit Testing We have passionately been protecting the health of the world’s workforce since 1992 with our quantitative respiratory fit tester, the OHD Quantifit
  • AeroFit-quote - landing. ohdusa. com
    Connect to OHD’s cloud-based compliance software to simplify fit test compliance tracking Quick Setup Start testing quickly with a simple configuration process and guided respirator selection
  • Contact - OHD
    OHD Support; 2687 John Hawkins Pkwy, Hoover AL, 35244; United States of America; email: sales@ohdusa com; phone: (205) 980-0180; fax: (205)980-5764; @2016 Occupational Health Dynamics
  • The Benefits of Switching to CNP - OHD
    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 environments
  • Fit Test Anywhere - Fast Free Quote - OHD
    OHD's patented Controlled Negative Pressure (CNP) Technology directly measures respirator leakage, using air as the only challenge agent No consumables required The unit measures the leak rate (in cc min) by determining the exact amount of air that leaks into the respirator during the fit test
  • Blog | OHD Global | OHD News
    OHD is committed to the research and future development of Respiratory Protection That is why we have recently partnered with the University of Washington and their School of Public Health
  • Request a Quantifit Demo - OHD
    The OHD Quantifit provides a fast, safe and OSHA NFPA ISO Certified fit test Are you ready to see Qua ntifit and it's patented Controlled Negative Pressure technology first hand? Request a demo now!
  • Download the ISO Fit-Testing Standards - OHD
    The ISO has written OHD into the standards for fit-testing procedures Discover the benefits of writing 16975-3 into your country's standards





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