Assuming you are testing for the photoresist you got from me, I got
execellent results using Pictorico Premium OHP Transparency Film.
http://www.pictorico.com/index.asp?PageAction=VIEWCATS&Category=51Part of the reason that I used this is that people who do alternative
photography that involves etching, use this transparency with
excellent results. According to the wrapper my transparency is
enclosed in it is good for pigment and dye based inkjet inks.