From: Lew on
Is there a published formula for an equivalent to Tetenal Ultrafin Plus?
TIA.

--
-Lew
The workers took the robot for Maria.


From: Keith Tapscott. on

Lew;742828 Wrote:
> Is there a published formula for an equivalent to Tetenal Ultrafin
> Plus?
> TIA.
>
> --
> -Lew
No, Tetenal don`t publish their formulas.




--
Keith Tapscott.
From: Richard Knoppow on

"Lew" <lew1716(a)optonline.net> wrote in message
news:48836608$0$5002$607ed4bc(a)cv.net...
> Is there a published formula for an equivalent to Tetenal
> Ultrafin Plus?
> TIA.
>
> --
> -Lew

The formula is proprietary but check books like Steve
Anchell's _Darkroom Cookbook_ because there are sometimes
pretty close guesses in them. I can't download the MSDS from
the Tetenal site for some reason, perhaps you can. It will
not give the formula but will at least give some clue as to
the type of developer.
In fact, while there are many developing agents and lots
of proprietary formulas most developers fall into a few
classes and within those classes there is not much
difference. Ultrafin is a liquid concentrate so some of the
ingredients will be chosen for their capability of being
dissolved in high concentrations and there will be some to
keep everything in solution. These are not needed when
mixing something in lower concentration.
If you want to mix your own just to do it the formula
for Kodak Xtol is available because its in the patent. This
is a very good developer for many films.
What exactly is your object in making your own?


--
---
Richard Knoppow
Los Angeles, CA, USA
dickburk(a)ix.netcom.com


From: Lew on
I always mix my own developers. On the Rolli site there's mention of the
combo of one of their films at half its usual iso developed in ultrafin
plus. Thought I'd try it out.
"Richard Knoppow" <dickburk(a)ix.netcom.com> wrote in message
news:t8qdnXZedsfShxjVnZ2dnUVZ_gKdnZ2d(a)earthlink.com...
>
> "Lew" <lew1716(a)optonline.net> wrote in message
> news:48836608$0$5002$607ed4bc(a)cv.net...
>> Is there a published formula for an equivalent to Tetenal Ultrafin Plus?
>> TIA.
>>
>> --
>> -Lew
>
> The formula is proprietary but check books like Steve Anchell's
> _Darkroom Cookbook_ because there are sometimes pretty close guesses in
> them. I can't download the MSDS from the Tetenal site for some reason,
> perhaps you can. It will not give the formula but will at least give some
> clue as to the type of developer.
> In fact, while there are many developing agents and lots of proprietary
> formulas most developers fall into a few classes and within those classes
> there is not much difference. Ultrafin is a liquid concentrate so some of
> the ingredients will be chosen for their capability of being dissolved in
> high concentrations and there will be some to keep everything in solution.
> These are not needed when mixing something in lower concentration.
> If you want to mix your own just to do it the formula for Kodak Xtol is
> available because its in the patent. This is a very good developer for
> many films.
> What exactly is your object in making your own?
>
>
> --
> ---
> Richard Knoppow
> Los Angeles, CA, USA
> dickburk(a)ix.netcom.com
>

From: Jean-David Beyer on
Lew wrote:
> I always mix my own developers. On the Rolli site there's mention of the
> combo of one of their films at half its usual iso developed in ultrafin
> plus. Thought I'd try it out.

Go ahead (seriously). I used to mix up a lot of different developers to try
them out, too. But now the only one I mix is my own version of D-72 (for
paper) because I do not like the color I used to get with Dektol or straight
D-72. The only difference is my use of benzotriazole instead of potassium
bromide as restrainer.

I am reminded of something I believe Kenneth Mees once said about developers
(probably film developers. I cannot quote exactly, but it went to the effect
that it was amazing how many ways there were by which identical results
could be obtained.

--
.~. Jean-David Beyer Registered Linux User 85642.
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/( )\ Shrewsbury, New Jersey http://counter.li.org
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