Re: edible alt
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- Subject: Re: edible alt
- From: Diana Bloomfield <firstname.lastname@example.org>
- Date: Fri, 19 Dec 2008 12:35:10 -0500
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I posted this before, I think, and you most likely know about this
already-- but I was making some pt/pd prints for an exhibit and, at
the 11th hour, ran out of developer. I called my 2 friends here who
do pt'pd printing, and both were away. This was a Sunday, so not
much open around here. I looked up a recipe for sodium acetate
developer, and it can be made using baking soda and vinegar. I tried
it, and it worked like a charm. I normally use potassium oxalate,
and the sodium acetate had a less warm brown tone and produced much
more of a deep grey, b&w tone. I liked the look of it. I haven't
done it since, but as I remember, I used distilled white vinegar--
put the baking soda in first and kept adding vinegar until it fizzed,
and I couldn't see any more baking soda. Not very scientific, I
know-- but I had to use a lot to get a good amount of developer.
Anyway, it did the trick, and the prints looked good-- with
absolutely no hint of clearing problems, either-- which I sometimes
get with the potassium oxalate and certain papers.
I seem to recall in past postings that certain "food" items could be
used in alt photography.
For example I read that a saturated solution of MSG could be used
PT/PD prints. I also recall that either Sprite or 7-Up had enough
phosphoric acid in it to be used as a clearing bath.
I would like to add a few. Most "Iron tonics" used for anemia
contain ferric ammonium citrate as their "iron". If I mix them
with a bit
of Potassium Ferricyanide solution I could make some cyanotypes, yes?
I returned from Paris with a nasty flu and have been taking
Buckley's cough syrup with its characteristic high gag factor
& taste. When I read the label it stated that it contained Ammonium
Carbonate. Soooooooooo, if Eric Neilsen will tall me the right
citric acid to add, I guess I could make an Ammonium Citrate PT/PD
I must confess I find it scary to consume anything that can either
develop or clear PT/PD prints but I guess this is "better living
chemistry" as our old pals at DuPont used to say.
Please check my website: http://www.bobkiss.com/
"Live as if you are going to die tomorrow. Learn as if you are
live forever". Mahatma Gandhi