[pure-silver] Re: Using diluted vinegar as stop bath
- From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Fri, 25 Feb 2011 12:26:16 -0800
----- Original Message -----
From: "Bogdan" <bkarasek@xxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Friday, February 25, 2011 11:56 AM
Subject: [pure-silver] Using diluted vinegar as stop bath
Hello all,
this was discussed a few years back, but do not remember
the details.
I have 3 gallons of kitchen vinegar and I remember it was
mentioned that
a dilution of vinegar could be used as a stop bath. Does
anybody know
what dilution of vinegar to water I should use? Are there
any
disadvantages to using diluted vinegar as opposed to the
Indicator Stop
made by the great yellow Father or Ilford's Stop bath? If
I do use
diluted vinegar, how can I tell when I should dump the
bath?
Cheers,
Bogdan
White or distilled vinegar is reasonably pure acetic
acid at about 5% and can be used as a stop bath by diluting
with an equal volume of water.
There is considerable information about using vinegar in
place of acetic acid in the WW-2 edition of the
_Photo-Lab-Index_ mostly from Kodak. Acetic acid was a
strategic material and in short supply for civilian purposes
so the use of vinegar was a necessity.
--
Richard Knoppow
Los Angeles
WB6KBL
dickburk@xxxxxxxxxxxxx
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