[pure-silver] Re: Tray development and fog

  • From: Howard Efner <hfefner@xxxxxxxxxxxxx>
  • To: pure-silver@xxxxxxxxxxxxx
  • Date: Sun, 22 Jan 2006 10:01:48 -0700

At 09:49 AM 1/22/2006, you wrote:

I use Bergger's BPFB 18 for making enlarged negatives for platinum printing.
I am not impressed with the packaging of their large sheets films; 16x20 or
20x24. Sheets that are against the thin press board inside the bags, have
fogged the film where the film in the middle of the package or fine. It
doesn't matter if it is the top sheets or the bottom sheet. Where ever the
film is in contact with the paper it is fogged.

Eric et al - is there a problem with the facing cardboard? High sulfur/sulfite content or something that is causing chemical fog on the film in contact with the paper? There was a similar problem years ago with the old duPont/Defender film where they got a different lot of interleaf paper that was off-spec and caused chemical fogging of the film.




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