Quote: (Originally Posted by
osiris)

Drager claim they put a film on the mask that precludes fogging. Must be true as on the times I forgot to spit, it never fogged up. Might wear off with time though. Rinsing with fresh water seems to be the way to go.
I had a reply from Drager when I found stains on the inside of the lens caused when I had it packed away and the straps contacted the inside of the lens. I now have a piece of soft cloth inside the mask to stop this ever happening again.......YOU'VE BEEN WARNED!!!!
Drager clearly stated the lens has an anti fog/anti scratch coating on the inside and the stains cannot be removed...otherwise it will remove the coating ruining the lens.
Funny thing now is the lens foggs up directly over the marks......so obviously what they say is correct.
Regards,
Lance