Blue Stain on Film Edge

Discussion in 'B&W: Film, Paper, Chemistry' started by Tom Duffy, May 7, 2003.

  1. Tom Duffy

    Tom Duffy Member

    Nov 13, 2002
    New Jersey
    Well, another first for me. Developed 5 sheets of 8x10 Tri-x in a Jobo, using rollo pyro with 5 min presoak. the film got a 20 min wash while still in the drums. Examining the negs, I noticed a thin patch of blue on the short edges of most of the negatives.

    I'm guessing it's anti-halation dye not washed out because the film was in contact with the drum. The blue doesn't extend into he image area and the negative has a nice, even stain and seem properly fixed.

    Are these negs ok, archivally (I'm thinking retained silver), and otherwise?

    Anyone know what combination of prewash/fix/wash problem this is? or is it all of the above?

    can I rewash to remove the dye, at this point?

    Thanks for any help.
  2. David Hall

    David Hall Member

    Jan 8, 2003
    South Pasade
    I have this same problem from time to time with sheets in the Jobo. The blue washes out, and will wash out faster if you washed the sheets in a tray for a few minutes. So far as I know, the sheets are archival and unaffected by the stain. My guess has been that it's anti-0halation dye that doesn't drain completely after the prewash, but I don't know.