Patent ID: 7415864

Claim:
A method for testing the functionality of a protective mask tester, comprising the steps of: providing an orifice test calibration device comprising: a semi-rigid tubular channel having a first end effective for sealing a mask head piece flow port and a second end effective for sealing a mask head piece vacuum port of said protective mask tester; a sealable opening within the tubular channel; and, an insertable orifice plug for insertion into the sealable opening, wherein the orifice plug has a set opening diameter; inserting the orifice test calibration device into the flow port and the vacuum port of the protective mask tester; flowing a detectable airborne composition outside of the orifice test calibration device; and, drawing a vacuum within the orifice test calibration device, wherein the air flow within the orifice test calibration device is monitored for the presence of the detectable airborne composition.