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Thread: Issues with Pyrocat-MC… Any suggestions?

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  1. #1
    Lachlan 717
    Join Date
    Apr 2007
    Posts
    2,365

    Issues with Pyrocat-MC… Any suggestions?

    I am trying to get my head around Pyro-MC and not having much luck.

    As background, here is what I'm doing:

    *Pyrocat-MC from Photographers' Formulary. Tried both tap water and distilled. Parts A&B added by syringe (one for each bottle; thoroughly clean). Mixed at 3:3:300ml in clean cylinders;
    *Kodak TXP @ 9 minutes as per the recommended starting point;
    *JOBO processor set at 3 seconds;
    *20 degrees for all chemicals;
    *Tried both water stop and Foto Speed SB50 stop;
    *Tetenal Superfix as the fixer (checked as being pH neutral).

    As for results, I am getting really, really thin negs with only highlight details; nothing at all in the shadows. Basically base+fog and a couple of weak highlight areas.

    As a control, I have processed identically exposed sheets in Tetenal Ultrafin with no issues whatsoever. Nice, robust negs with no issues in tone range.

    Before I head out and do even more test developments (messing round with Dev times to see if I can get some more density/image on the sheets), can anyone shed some light on this? I'd like to know why the images are so far off being even acceptable. Am I doing something significantly stupid?

    Thanks in advance,
    Last edited by Lachlan 717; 25-Jul-2010 at 19:26. Reason: Been watching too much Doogie Howser
    Lachlan.

    You miss 100% of the shots you never take. -- Wayne Gretzky

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