From: Linas Kudzma (lkudzma@earthlink.net)
Date: 04/20/02-04:17:00 PM Z
Ed,
I've been using the metol version for almost two years. In fact, until
recently was using only 0.25 gm of metol in 100 ml of solution A. If you
remember, the typo on your web site had that amount. The amount of metol
isn't very critical. Apparently, a small amount of metol is enough due to
superadditive regeneration.
I have tried 10% NaOH instead of the very concentrated K2CO3 for solution B.
My feeling is that the negatives from using 10% NaOH are slightly less
sharp. I don't think it's my imagination, but it's subtle. I prefer Sandy's
original
100g anhydrous K2CO3 in 100 ml water for solution B.
As is obvious from my various posts, I'm a very big fan of Pyrocat-HD for
negs for Pd/Pt. It works great with Tri-X.
Linas
----- Original Message -----
From: "Ed Buffaloe" <EdBuffaloe@unblinkingeye.com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Wednesday, April 17, 2002 9:42 PM
Subject: Re: Tri-x in Pyrocat
> My times for film in PMK and Pyrocat-HD are usually the same. I give
Tri-X
> roll film 12 minutes at 75 degrees, with an EI of 250. When I develop
sheet
> film by inspection my times generally fall between 10 and 20 minutes,
> depending on developer temperature. This is for conventional silver
> printing, though at the higher end of the contrast scale they often print
> well on VDB also.
>
> Recently I've been using the metol version of Pyrocat-HD with 10%
hydroxide
> for solution B. I call it Pyrocat-HDMV - high definition metol variant.
> Gotta call it something...
>
> Ed Buffaloe
> http://unblinkingeye.com
>
>
> > I don't have any test data with Tri-X and Pyrocat in tray. However,
> > my tests with rotary processing suggest that a good starting point
> > for your first attempts in tray with this film/developer would be
> > 10-12 minutes at 72F, assuming you want a final DR of about 1.6
> > (carbon, palladium) with a normal SBR of 7. For platinum printing and
> > a DR of about 1.4 with normal scenes 8-10 minutes would be a better
> > bet.
> >
> > Sandy
> >
> >
> >
> > >I've been reading about this all day. Does anyone use Tri-x (8x10 in
my
> > >case) with Sandy's pyrocat?
> > >
> > >Starting development time in trays with "normal" agitation?
> > >
> > >Starting EI for this combination?
> > >
> > >Sorry if this is old news, but my brain is very, very small, you see...
> > >
> > >Bill
>
>
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