Archived posting to the Leica Users Group, 2004/07/25

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Subject: [Leica] Re: Hints on JOBO auto processing.
From: ericm at pobox.com (Eric)
Date: Sun Jul 25 10:07:06 2004
References: <NEBBJDFBIKOBILIKPPBNMEEMAAAB.red735i@earthlink.net> <4103BB04.7050707@chello.nl>

Nathan:

>Actually, as far as I recall, Kodak's recommendation is 100ml of pure 
>XTOL per film. And there are people here, like Mark Rabiner and yours 
>truly, who have often violated this rule because we like to use XTOL 1+3 
>(which BTW is no longer recommended by Kodak). My Jobo tanks take about 
>1/2 l of solution, and so a 1+3 dilution of XTOL will have 125ml of XTOL 
>in it. I have routinely developed Fuji Acros in this soup, 2 rolls at a 
>time, with excellent results.

Last time we had a major Xtol discussion, I took the time to create this
page:

http://canid.com/xtol_faq.html

If I were using Tmax like Adam, I would observe Kodak's recommendations of
100 ml per roll.  I believe there are problems with tmax with lesser
amounts.

I use about 63ml Xtol per roll with Fuji, though, and I'm happy with my
results.  (~250 ml Xtol + 750 ml water in a 1 L tank with 4 rolls).
Actually, it's slightly more than 250 ml Xtol.  I use 250 ml bottles that I
fill up to the very top of the neck so there is minimal air in the bottle.

I believe that Kodak no longer publishes the 1:3 times because of the
minimum developer amount required by tmax films.  You could only develop 2
rolls in a 1 L tank and still observe the recommended minimum volume of
developer.  For reasons I don't understand, Kodak doesn't care greatly about
the results with Fuji products.  <grin>

--
Eric
http://canid.com/


In reply to: Message from red735i at earthlink.net (Frank Filippone) ([Leica] Hints on JOBO auto processing.)
Message from n.wajsman at chello.nl (Nathan Wajsman) ([Leica] Hints on JOBO auto processing.)