The Alarm tones go off in the Fire Station about 2:45 pm – the voice says 3 and 1 dispatch (3 engines and 1 ladder) electrical fire in garden office complex. The firefighters head to the apparatus bay, jump in their turnout pants...

No matter who you are, there’s always that one sound that makes your toes curl and your skin crawl. Whether it’s terracotta plant pots, nails on a chalkboard or children crying, there are a whole host of sounds out there that can...

OHD has recently partnered with the Chun Shan Medical University and provided them with an OHD Quantifit mask fit testing device. Providing these up and coming students with the capabilities to see and test with OHD's controlled...

Fit-testing has changed over the years. For a while, there was only one accepted technology and method for testing the fit of masks. Those processes have changed (for the better) as we provide an OSHA and ISO-approved method for...

Here at OHD, we strive to provide exceptional customer service for you and your employees. Whether it be fit testing, noise monitoring programs or any of our other safety products, we have deemed it our goal to inform, guide and...