Safety Source provides Quantitative Fit testing for all brands of SCBA and APR full face and half mask respirators. We use the OHD Quantifit for all our respirator fit testing. While old technologies are sometimes hard to give up because, “we’ve just always done it that way,” the OHD Quantifit offers an impressive array of advantages that can dramatically improve your respirator program. Within the first ten seconds of testing, you will know whether the respirator user has a basic fit or not.The OHD Quantafit meets CSA Z94.4, OSHA, and ANSI standards. With the REDON protocol, a fit test can be performed in as little as 2-3 minutes. Multiple donnings during the fit test ensures the worker knows how to apply the respirator correctly with each use.