Products by OHD, Inc.

Introducing the new OHD Quantifit, the Gold Standard in respirator fit testing. Quantifit is twice as fast as any other fit tester and more accurate. The new stand-alone option includes on-board storage of up to 500 fit tests. Quantifit features keyboard input, USB printer connection, USB memory...

Introducing the new OHD/Cirrus Research OptimusTM RTA Sound Level Meter. The color OLED displays in high quality allowing you to set color coding for levels, it auto-adjusts for any lighting condition, and you can view it from any angle. The Optimus measures all data in one measurement, so you...