Yup. Nerd anon here with powerful microscope at home. Wore the mask for 20 min. Checked the mask. Saw something but nothing out of the ordinary. Wore it for over an hour and then looked at it again. Let me just say there is a reason it is recommended to change your mask every 20 min.
Comprehensive list for preparation. September is the month to prepare. Start now.
http://zetatalk11.com/docs/