[pure-silver] Re: Using diluted vinegar as stop bath
- From: "Eric Neilsen Photo" <ej@xxxxxxxxxxxxxxxxxxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Sat, 26 Feb 2011 12:29:42 -0600
The more dilute, the less fast it will and potentially less effective it
will be it bringing the pH down from above 7 (basic) to below 7. It would be
better to error on the side of too dilute since you can effectively stop a
developer with adequate water.
Advantage to NOT using an indicator is that there is no indicator to carrier
over into your print. I have seen hypo clearing agent turn purple from
residual indicator in the paper. Proof was stop using indicator and the hypo
clean never got a purple color. Indicator goes from yellow to purple. The
citric acid stop is also effective but thanks to ADM and other users of
citric acid, the price goes up with food prices.
Eric Neilsen
Eric Neilsen Photography
4101 Commerce Street, Suite 9
Dallas, TX 75226
www.ericneilsenphotography.com
skype me with ejprinter
www.ericneilsenphotography.com/forum1
Let's Talk Photography
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From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Gerald Koch
Sent: Saturday, February 26, 2011 12:19 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Using diluted vinegar as stop bath
To use as a stop bath it must be white or distilled vinegar. The brown form
may stain. Check the label as it can be any percentage from 4% to 5%
depending on the brand. Kodak SB-1 for papers is 2% acetic acid, for films
the percentage can be 1%. So if you have the 4% version dilute it with an
equal amount of water for 2%.
Jerry
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From: Bogdan <bkarasek@xxxxxxxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Fri, February 25, 2011 2:56:37 PM
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
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