My experience with the Foma b&w slide kit

Discussion in 'B&W: Film, Paper, Chemistry' started by Alessandro Serrao, Jul 5, 2005.

  1. Alessandro Serrao

    Alessandro Serrao Member

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    Hi, I'm here writing about my experience (or a nightmare should I say :mad: ) about using the Foma b&w slide kit. I must be honest: I've only tried with an Ilford Fp4+, shots taken @100. I've followed religiously the kit instructions and added only a fix hardener along with the fixer given by Foma. The hardener is an alum based (Tetenal Harter). I must say the picture turned out well: the only drawback is that the emulsion literally peeled off the base.
    What the hell is that? Emulsion peeled off? :confused:

    I know that this can happen if a too acidic solution come in contact with the film but, being the kit specifically tailored to b&w film negative, why ever I have experienced this? :surprised:

    Someone hopefully can shed light on this. :D

    P.S.: still haven't tried the foma 100r film sold for this kit.
     
  2. Jordan

    Jordan Member

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    Alessandro -- see my reply to your question on photo.net. Reversal-processed film is really fragile because the acid in the bleach really does a number on the gelatin. You have to be careful not to physically damage the film. (No squeegeeing, etc.) Maybe the Foma 100R film is specially hardened at the factory or something. In any case I think some of the damage may be happening before you can even harden the film in the fixer. Maybe try a shorter bleach time, or lower bleach temperature? What bleach does this kit use, permanganate (purple) or dichromate (orange)?
     
  3. Alessandro Serrao

    Alessandro Serrao Member

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    Permanganate, dichromate is too dangerous...