Sometimes I get a translucent stain that runs along the length of the film (like last night!) This seems to be an intermittent phenomena for me. Typically it will run the full length of the film, but only along one half (ie top or bottom) or the centre of the roll. Usually purple, although I have had brown. On going thru my neg archive, I noticed that it has occurred on Ilford and Kodak films, and on both old and new type films. It doesnt seem to affect printing noticably, but I still dont like it! I keep a scrupulously clean darkroom (or try to), and usually use XTol 1+1, acid stop bath, and Ilford Hypam rapid fixer (usually w/out hardener)(posted 8355 days ago)Does anyone have any ideas where this stain comes from? What could I be doing to cause it? I'd like to avoid it in future.
Thanks