[rollei_list] Re: Rodinal
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <rollei_list@xxxxxxxxxxxxx>
- Date: Thu, 23 Oct 2008 00:46:38 -0700
----- Original Message -----
From: "Daniel Ridings" <dlridings@xxxxxxxxx>
To: <rollei_list@xxxxxxxxxxxxx>
Sent: Wednesday, October 22, 2008 10:43 PM
Subject: [rollei_list] Re: Rodinal
On Thu, Oct 23, 2008 at 12:56 AM, Marc James Small
<marcsmall@xxxxxxxxxxx> wrote:
I have also held to D-76 as my standard developer but
like that Citric-Acid
based developer Kodak introduced in the later 1990's.
THAT is grea stuff.
Somewhere, I have a DIY formula for it.
Are you thinking of Xtol Marc? I've never mixed it myself.
I know
there are formulas out there, but the stuff is so cheap
and lasts so
long (yeah, yeah, someone will say it dies, I say they
made a
mistake), that I've never been tempted to try and surpass
Kodak's
quality controls. :-)
Daniel
---
Ascorbic acid or sodium ascorbate perhaps. Its always
used with another developing agent sometimes Metol and
sometimes Phenidone or one of its relatives like Kodak
Dimezone. Xtol is the latter, i.e., Dimezone and Ascorbic
acid. The formula is secret but the patents give what is
probably pretty close to the packaged formula. See USP
5,756,271 and USP 5,83,964
for more details. Both have several examples of such
developers. There are formulas for both powder packages and
liquid concentrates. The powder form is probably close, if
not identical, to Xtol.
--
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx
---
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