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Thread: Tiny white spots on TMY in Tmax RS - any advice?

  1. #1

    Join Date
    Sep 2006
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    351

    Tiny white spots on TMY in Tmax RS - any advice?

    I'm developing TMY sheets and 120 rolls in a small tank with TMax RS developer and I'm getting very small white spots on the negative (ie tiny emulsion "pinholes") under a 10x lupe. It doesn't happen with TMX using the same method. Any ideas what might be causing it?

    Thanks in advance!

  2. #2
    Octogenarian
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    Sep 2003
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    Frisco, Texas
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    Re: Tiny white spots on TMY in Tmax RS - any advice?

    Acid stop bath?

  3. #3

    Join Date
    Sep 2006
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    351

    Re: Tiny white spots on TMY in Tmax RS - any advice?

    Thanks Gem - I am using an acid stop bath. Would this make a difference?

  4. #4

    Join Date
    Feb 2011
    Location
    Budd Lake, NJ
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    Re: Tiny white spots on TMY in Tmax RS - any advice?

    It depends on whether there is any carbonate in your developer. What happenes is when a developer contains sodium carbonate, used to increase the pH of the devloper, gets placed into an acid bath - carbon dioxide gas bubbles get released which can cause blistering in the emulsion. This would be a pin hole.

    A plain water rinse to replace the acid stop bath should fix your problem assuming that is is a pin hole...
    . . . . . . . . . . . . . . . . . . . . . . . . . . . .
    John Belthoff
    Black & White Film Photographer
    http://www.customfilmworks.com/

  5. #5

    Join Date
    Sep 2006
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    351

    Re: Tiny white spots on TMY in Tmax RS - any advice?

    Thanks John - I'll give plain water a try.

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