[pure-silver] Re: 'Ripening' procedure for developer?
- From: "EJ Neilsen" <ej@xxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Mon, 7 May 2007 09:28:21 -0500
So your inquiry here is to doubt the prevailing wisdom and or myth that it
is a good idea to allow powdered prepared developers to sit and cool, and
that they can be used immediately after mixing because no reactions are
taking place of consequence until the film or paper is introduced? And that
they have reached equilibrium very shortly after mixing?
You may want to inquire to the Photographers Formulary and see if they can
provide any answers, also Sprint Photo Chemicals.
Eric
Eric Neilsen Photography
4101 Commerce Street, Suite 9
Dallas, TX 75226
214-827-8301
http://ericneilsenphotography.com
Skype : ejprinter
> -----Original Message-----
> From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-
> bounce@xxxxxxxxxxxxx] On Behalf Of hksvk
> Sent: Sunday, May 06, 2007 8:09 PM
> To: pure-silver@xxxxxxxxxxxxx
> Subject: [pure-silver] Re: 'Ripening' procedure for developer?
>
> on 5/6/07 12:26 PM, EJ Neilsen at ej@xxxxxxxxxxxxxxxxxxxxxxxxxx
> wrote:
>
> > a good portion of
> > study in chemistry classes is spent on what solutions are,
> how they come to
> > be and what can happen as other components are added
> together.
>
>
> Yes, in organic chemistry this is very true. To a much lesser
> degree in
> inorganic chemistry. But I think there are no reactions going
> on as a
> developer is built, except with equilibrium reactions with pH
> changes. That
> is, I think the reagents comprising a developer do not react
> with one
> another. The reactions happen when the developer meets the
> emulsion. Do you
> chemists agree?
>
> Harry
>
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