Washing and stain with Pyrocat

Discussion in 'B&W: Film, Paper, Chemistry' started by Jimmy Peguet, Nov 20, 2003.

  1. Jimmy Peguet

    Jimmy Peguet Subscriber

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    A question about Pyrocat, stain and washing : what are approx. your b+f levels ? Reading the blue channel on my densitometer with 13x18 FP4+ processed in an Expert drum Jobo and a CPA2, lowest rotation speed, I read 0.10 for a N development, and about 0.15 for a N+1. These are my first trials with Jobo, FP4 and Pyrocat, in trays b+f was of course lower, 0.08 with 13x18 and 0.06 with 4x5" for N time. But I suspect that a great part of this b+f in Jobo comes from the washing time, and that it is possible to reduce this level with a shorter process. What washing process, what time would you suggest for an efficient wash when using a Jobo processor with Pyrocat ?
     
  2. sanking

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  3. Jimmy Peguet

    Jimmy Peguet Subscriber

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    Sandy,

    I recently had surprises washing ABC negs with gentle agitation, resulting in low stain, I thought it could be same thing, washing directly in Jobo being much more violent (I washed during 30' as usual in trays, maybe a bit long for a Jobo ?). I developed a new set of 13x18 (or 5x7" for you), washing them quietly during 30' with several waters in trays, and I got exactly the same b+f values than those washed in the Jobo. I'm not used with pyro in rotation, stain seems to work differently : with ABC developed in trays, stain comes during washing, while Pyrocat negs are already stained after the fixer.
     
  4. sanking

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