From: Sandy King (sanking@clemson.edu)
Date: 12/31/01-09:12:33 AM Z
Witho,
Substitute the metol for phenidone at about 10X the amount of
phenidone. There is no other change to the formula. In all of my
tests development times were virtually identical to reach the same CI
with a given film.
Regards,
Sandy
>Clay or others, I like to know were or how you order your special cut TX
>material. I would like to have TX in 11x14.
>And what is the formula for Pyrocat HD with metol. I only know the phenidone
>type.
>
>Regards,
>
>Witho
>
>
>And for all a good 2002 !
>
>
>----- Original Message -----
>From: "clay" <wcharmon@wt.net>
>To: <alt-photo-process-l@skyway.usask.ca>
>Sent: Monday, December 31, 2001 2:54 PM
>Subject: Re: Stain Redux - Pyrocat HD and Tri-X: was Double Dipping
>
>
>> Sandy:
>>
>> The solution I have been using I mixed about 2 months ago. I developed a
>> bunch of HP-5 and Tmax400 negatives at the same time, though, and the
>> results were fine, with only proportional image stain. So I don't think
>the
>> solution is bad. To be fair, this is a new batch of Tri-X that was special
>> ordered in 7x17 size, and this was the first set of negatives developed
>from
>> this batch. I suppose it is possible that the great yellow father has
>> somehow messed up this batch. I am going to shoot some more with this film
>> and develop some negatives in both Rollo and D-76 to see if there is a
>> problem with the film. I sure hope it is not the film. The thought of
>trying
>> to return 15 boxes sounds like a royal pain in the glutes.
>>
>> BTW, the negatives were still usable. I just needed about a 25% increase
>in
>> exposure.
>>
>> Clay
>>
>>
>> ----------
>> >From: Sandy King <sanking@clemson.edu>
>> >To: alt-photo-process-l@skyway.usask.ca
>> >Subject: Re: Stain Redux - Pyrocat HD and Tri-X: was Double Dipping
>> >Date: Mon, Dec 31, 2001, 1:30 AM
>> >
>>
>> >Clay,
>> >
>> >I did not see your original message regarding the fog+ stain you got
>> >on the border areas when using Pyrocat with TRI-X. The first thing
>> >that pops into my mind is to ask about the age of your stock solution
>> >of Pyrocat? I mention this because the shelf life of Pyrocat, when
>> >mixed with phenidone, is probably no greater than about three months.
>> >When the Pyrocat stock solution goes bad the result is a lot of extra
>> >base stain, somewhat irregular - even splotchy- and very observable
>> >on the clear edges of the film.
>> >
>> >
>> >With TRI-X developed in fresh Pyrocat I have not observed elevated
>> >overall stain levels or excessive general fog.
>> >
>> >Sandy King
>>
--
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