[pure-silver] Re: Request For Chemist: Bleach - Alcohol Interaction?

On 05/10/2012 08:25 PM, Gerald Koch wrote:

An interesting question. I don't see the ingredients themselves encouraging 
mold. However bits of emulsion getting in the solution will. In my own darkroom 
I store only concentrates to save space. Developer, stop bath and HCA get 
tossed after a single use.
Jerry



That's pretty much what I do as well except that I keep D-76 replentished for 6 
months
at a time and I keep the PermaWash/KRST toner mixture around for a month or so.



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*From:* Richard Knoppow <dickburk@xxxxxxxxxxxxx>
*To:* pure-silver@xxxxxxxxxxxxx
*Sent:* Thu, May 10, 2012 7:59:48 PM
*Subject:* [pure-silver] Re: Request For Chemist: Bleach - Alcohol Interaction?

 > As a side point, is it reasonable to premix a gal and use it over a period
 > of weeks or months (one shot), or is there some compelling reason to mixver 
bits of emulsion do
 > it each time and as needed?
 > --
The plain fact is that I don't know. I think the alcohol might evaporate but if 
the container is sealed most of the time perhaps it won't. There may be other 
reasons for making it up as needed. It seems to me that diluted solutions of 
Photo-Flo are vulnerable to mold. I suspect Jerry or one of the other chemists 
here could give a more definite answer.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@xxxxxxxxxxxxx <mailto:dickburk@xxxxxxxxxxxxx>
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