Archived posting to the Leica Users Group, 2002/01/03

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Subject: Re: [Leica] experiments in the limits of XTol
From: "Tim Atherton" <tim@KairosPhoto.com>
Date: Thu, 3 Jan 2002 13:59:45 -0700
References: <B85A021F.7398%Mail@SlideOne.com> <p05100316b85a5faa9a3c@[209.53.33.113]>

As I recall, a while ago on the LUG a chemist/water engineer posted an
excellent explanation of how and why Xtol needs to be looked after,
oxidises.

Unless I've got the wrong list (!) maybe someone better at searching the
archives can find it....

Tim A


- ----- Original Message -----
From: "Henning Wulff" <henningw@archiphoto.com>
To: <leica-users@mejac.palo-alto.ca.us>
Sent: Thursday, January 03, 2002 12:26 PM
Subject: Re: [Leica] experiments in the limits of XTol


> At 12:42 PM -0600 1/3/02, John Straus wrote:
> >on 1/3/02 11:39 AM, Mark Rabiner at mark@markrabiner.com wrote:
> >
> >>  The bottom line is you just cant trust the stuff overnight in a
> >>  partially filled container.
> >>  So i just don't do that.
> >>  But you gotta get some little bottles.
> >>  And you gotta know the territory!
> >
> >Does this mean that even at full strength it won't last 1-2 months in a
> >partially filled bottle as Kodak states???
> >
>
> It might but don't do it because unlike most other developers, there
> are no visible clues when Xtol goes bad, and when it goes bad, it is
> as effective as tap water.
>
> Stock solution in a full bottle keeps a long time; I've kept it up to
> 6 months and others report up to a year, but partially full bottles
> should be used, decanted into smaller bottles or filled with an inert
> mass like marbles until there is no air at the top.
>
> --
>     *            Henning J. Wulff
>    /|\      Wulff Photography & Design
>   /###\   mailto:henningw@archiphoto.com
>   |[ ]|     http://www.archiphoto.com
> --
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In reply to: Message from John Straus <Mail@SlideOne.com> (Re: [Leica] experiments in the limits of XTol)
Message from Henning Wulff <henningw@archiphoto.com> (Re: [Leica] experiments in the limits of XTol)