[pure-silver] Re: Ilford 2150 machine emits Ammonia??

Quoting Barry Brinkman <bbrinkman@xxxxxxx>:

> 
> I have a Kreonite processing machine and ammonia is produced when 
> the developer and fixer are inadvertantly mixed together.  Once that

Rapid fixers are based upon ammonium thiosulfate. Developers tend to
be alkaline. When the pH (adding in some developer) is brought to alkaline it
starts to give off some ammonia. Solution? Use a buffered acid fixer.. :-)


> problem is fixed the smell usually is gone by the next day. 

-- 
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Edward C. Zimmermann, Basis Systeme netzwerk, Munich
Office Leo (R&D):
   Leopoldstrasse 53-55, D-80802 Munich,
   Federal Republic of Germany
http://www.nonmonotonic.net
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