[pure-silver] Re: PMK

How do you keep the water from moving when fixer and water meet?

Fixer will not sink to the bottom. Fixer and water mix to a new solution.





Regards



Ralph W. Lambrecht

http://www.darkroomagic.com







On 2006-04-28 16:27, "Koch, Gerald" <gkoch02@xxxxxxxxxx> wrote:

> Fixer is heavier than water and will tend to sink unless the wash water
> is kept moving.
> 
> Jerry
> 
> -----Original Message-----
> From: pure-silver-bounce@xxxxxxxxxxxxx
> [mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Jim MacKenzie
> Sent: Friday, April 28, 2006 12:07 AM
> To: pure-silver@xxxxxxxxxxxxx
> Subject: [pure-silver] Re: PMK
> 
> 
> On Thu, Apr 27, 2006 at 06:58:53PM -0400, Hagner, Andrew wrote:
>> All my life I have been using the standard alkaline/acidic process.
>> Can you describe the steps?  How is the development arrested without a
> 
>> stop bath or perhaps it is not needed.  What is used as a fixer, just
>> pure sodium thiosulphate?  Better yet, are there any references to
>> read that deal with the process?
> 
> My process is pretty simple, but based on the recommendations by Gordon
> Hutchings in The Book of Pyro.  (I don't claim to have the knowledge of
> chemistry that is definitely had by some on this list.)
> 
> I develop normally.  I use a 60-second running water wash (at developer
> temperature, usually 20 degrees), a 3- to 6-minute fix in Photographer's
> 
> Formulary TF-4 fixer (longer for T-grain emulsions and with less fresh
> fixer), and a 15-minute wash in developer-temperature water (gently
> running).  I empty out the tank a few times during the wash (maybe 4-5
> times), although I understand that fixer is less dense than water and
> floats out anyway.
> 
> The wash exceeds the recommendations, but it makes me feel better.
> 
> Jim
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