OHD
Occupational Health Dynamics 
Occupational Health Dynamics (OHD) is a leading company in the design, development, and manufacture of advanced occupational health and safety equipment. Headquartered in Hoover, Alabama, OHD is dedicated to providing customers in mining, construction and various other industries with state-of-the-art solutions to protect workers' health and safety.
As the manufacturer of leading fit testing equipment, the company's technology is designed to provide precise and reliable measurements, allowing managers to monitor potential health and safety risks and take appropriate mitigation measures.
Used by the US military, fire departments and many major corporations worldwide, the company's technology is well-known for its accuracy, ease of use, and superior performance, making it a trusted choice for occupational health and safety professionals. In particular, OHD’s premier product, the QuantiFit2 Respirator Fit Tester, brings fit testing to new heights with its patented Controlled Negative Pressure technology, known for its superior accuracy and speed.
OHD is committed to innovation, quality, and customer satisfaction. Through its world-class technology and unmatched customer service, the company is helping to create safer and healthier workplaces around the world.
As a close partner of OHD and exclusive distributor of OHD fit testing solutions in Australia, we take pride in providing local customers with OHD’s exceptional technologies. Both Air-Met Scientific and OHD are supporters of RESP-FIT, the respirator fit testing training and accreditation program from the Australian Institute of Occupational Hygienists (AIOH).
OHD’s range of fit testing equipment is available in Australia exclusively from Air-Met Scientific. Contact your local Air-Met Scientific office for more information.
QuantiFit2 Respirator Fit Tester
Swift and precise fit testing for respirators.
OHD Pure Adapters
Fit testing adapters for OHD respirator fit testers.