Prescysol images affected by Ilford purple dye? Scanning issue?

[Trask]

I've just run some Ilford Pan-F through Prescysol EF semi-stand, and again it seems that there are some films that Prescysol just doesn't like -- or is the the anti-halation dyes it doesn't like?

These negs, and some others that remain purplish (yes, good fixer, extra washing, etc, even pre-wash) in Prescysol seem to cause the development of much more marked grain than I, for one, would expect. Especially when I look at my lovely, clear-film-base Acros negatives in Prescysol, which scan ever so readily. So I'm wondering if there's some element in these Ilford films that doesn't play well with Prescysol.

Or....is it the fact that I'm scanning negs, not printing, and somehow the dye mask created by Prescysol with Ilford films scans badly? I guess this raises a corollary question: is it the case that some film/dev combos are better for scanning, while others are better for printing? I'd hate to think that I'm developing films that may scan well now, but that will print badly when I finally get back in a wet darkroom.

Yr thoughts on either issue appreciated.

[Dave Miller]

Did you give the film the 5 minute pre-soak that Peter recommends to get rid of the anti-halation dye?
He did say that he was working on a developer with enhanced scanning properties, why not email him and ask how far he's got.