From: Sandy King (sanking@clemson.edu)
Date: 04/17/02-09:11:18 PM Z
I agree with Ed in that times for Pyrocat and PMK are about the same,
"when using the 1:1:100 dilution." But let me clarify. The suggested
times that I provided for Pyrocat/Tri-X were based on the 2:2:100
dilution, which of course gives negatives with a much higher CI than
the 1:1:100 dilution. I apologize for failing to include that
important bit of information in my earlier message.
Look forward to seeing the results of Ed's tests with the metol and
sodium hydroxide variant of Pyrocat.
Sandy
>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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