Archived posting to the Leica Users Group, 1997/04/02

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Subject: Re: x-tol developer and tri-x400
From: Tina Manley <images@InfoAve.Net>
Date: Wed, 02 Apr 1997 08:26:38 -0500 (EST)

At 07:31 PM 4/1/97 -0700, you wrote:
>We have a similar problem with tap-water temperature in Boulder. Can you
>tell us about some dilution/temperature trade offs.

Chris:  These times are for a rotary-tube processor, but manual times would
be only slightly less.  For TMax 400 "Normal" processing at 68 degrees with
a dilution of 1:1 would be 7.75 minutes.  When you increase the temperature
to 80 degrees, if you dilute the developer to 1:3, the time is 7.50 minutes.
Kodak has a very comprehensive chart with all of the times, temperatures and
dilutions on their web site.  Go to and search for XTol.  Good
luck, Tina
Images by Tina Manley, ASMP