Archived posting to the Leica Users Group, 2000/05/07

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Subject: Re: [Leica] (Xtol) Why 1+3 dilution ?
From: "Julian Thomas" <>
Date: Sun, 7 May 2000 19:47:49 +0100
References: <001001bfb7a4$10fe6410$> <> <>

So, Mark, if I use Xtol at 1+1 and am getting too much contrast with Tri-X
(and I don't want to increase grain), should I extend dev time?

- ----- Original Message -----
From: "Mark Rabiner" <>
To: <>
Sent: Sunday, May 07, 2000 6:54 PM
Subject: Re: [Leica] (Xtol) Why 1+3 dilution ?

> Dan Cardish wrote:
> >
> > But more dilution implies longer development times which in turn implies
> > longer exposure to the sulphite which implies less grain.
> >
> > Dan C.
> >
> More time in a formula with less silver solvents (sulfite) in it, Dan!
> Sodium Bisulfite is put in D23 to make it D25 for that very reason you
> It lowers the pH so it spends more time in D23's high sulfite environment.
> Mush grain is the result.
> Your focusing magnifier in you darkroom shows you a mushroom field!
> Prints look like someone put Vaseline paste on the front element of a
> Mark Rabiner

In reply to: Message from "Jean-Claude Berger" <> (RE: [Leica] (Xtol) Why 1+3 dilution ?)
Message from Dan Cardish <> (Re: [Leica] (Xtol) Why 1+3 dilution ?)
Message from Mark Rabiner <> (Re: [Leica] (Xtol) Why 1+3 dilution ?)