I have run into an issue concerning cleaning of fit-test mask.  The concern has circled around how to clean the masks between fit-tests.  We have used disinfectiant respirator wipes between fit-tests then perform the full mask clean at the end of the shift.  
 
I would like to know what you are doing at your site?
_________________________________________________________________
Windows Live Hotmail is giving away Zunes.
http://www.windowslive-hotmail.com/ZuneADay/?locale=en-US&ocid=TXT_TAGLM_Mobile_Zune_V3