Efke R25 and HC-110?

Discussion in 'B&W: Film, Paper, Chemistry' started by Michel Hardy-Vallée, Jun 26, 2005.

  1. Michel Hardy-Vallée

    Michel Hardy-Vallée Membership Council Council

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    Has anyone used HC-110 with Efke R25 (120 rollfilm)? I've looked at both JandC and the MDC, but neither show suggested times. Would there be a reason not to use HC-110 with Efke R25 ?
     
  2. BradS

    BradS Member

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    Sounds like an opportunity to make a contribution to the MDC...
     
  3. Tom Hoskinson

    Tom Hoskinson Member

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    No reason not to try it. I'd suggest trying a high level of dilution and running some controlled tests.

    In my experience Efke 25 rollfilm works very well in Pyrocat-HD.

    I've also had good results with Ascorbic Acid/Phenidone and Ascorbic Acid/Metol developers, but I find that I prefer a staining and tanning developer with Efke 25 (and Efke 100). I usually develop for contact printing on Azo.
     
  4. Michel Hardy-Vallée

    Michel Hardy-Vallée Membership Council Council

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    I will not be the one developing the roll, rather my dad, to who I gave one as a gateway drug... He is mostly familiar with HC-110, and not (yet?) into pyro, so I was wondering if another film could provide a decent idea of times.

    APX25 maybe?
     
  5. Tom Hoskinson

    Tom Hoskinson Member

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    This estimate is based on Kodak Techpan developed in HC-110 Dilution B in a small tank: As a starting point, try 6 minutes at 68 degrees F.

    http://www.covintoninnovations.com/hc110/

    Follow the links to Kodak's developing recommendations for HC-110 and their link for Techpan processing recommendations.
     
  6. titrisol

    titrisol Member

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    you'll be very close with APX25 reccomendations.

    Try the most diluted HC-110 and very gentle agitation to harness the contrast.