Quote Originally Posted by mdm View Post
I dont see any reason why one could'nt brush sensitise dry tissue. May give that a try sometime too, though it comes with a time cost.
I hadn't even considered this aspect of things. I would guess it would work. My line of investigation come from looking for a sensitizer-incorporated tissue, because I wanted to avoid the time cost associated with sensitizing and waiting for the tissue to dry.

If you do try brush-sensitize, please let us know how it works. Also, I've come across some references to diazo compounds that are soluble in alcohol (or maybe acetone), which would not be appropriate for a sensitizer-incorporated tissue, but could be appropriate for spirit sensitizing.