OHD

OHD

OHD specializes in Occupational Health, Safety, and Industrial Hygiene instrumentation and software to help protect employees’ health and manage occupational risks. We offer respirator fit testing, including the revolutionary QuantiFit2™ device, which utilizes scientifically proven, patented controlled negative pressure technology to deliver precise elastomeric respirator fit testing results in under two minutes without consumables. New to the market, AeroFit leverages condensation nuclei counting technology to fit test both disposable and reusable respirators, streamlining the testing process with an interactive, user-friendly interface designed for efficiency. OHD is also the U.S. Master Distributor for Gilian air sampling equipment. Beyond fit testing and air sampling, we provide a comprehensive suite of occupational health and safety products—including noise monitoring and advanced instrumentation—to empower safer workplaces. With a full-service calibration department and industry-leading technical support, OHD is your partner for technical solutions.