The envo® mask Filter Cover Kit for Fit Testing includes two filter covers with adaptors, two plastic tabs, and instructions on how to use the components. The filter covers are for quantitative fit testing use with a PortaCount machine. Each filter cover has a stationary metal probe adapter to connect the PortaCount tube to the envo® mask for respirator fit testing. The moveable plastic round tab assists in holding open one area of the exhalation value during testing. This kit reduces filter wastage and leakage and increases the accuracy of test results.
