Quick salt print query

Jack Fulton (jfulton@itsa.ucsf.edu)
Mon, 18 Nov 1996 16:19:01 -0800 (PST)

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Dear folks...
Am @ school teaching right now......a student has made a set of salt
prints.She floated the watercolor paper (Letrus?) of about 130 lb in salt,
and let hang till dry.
Then she floated each piece in silver nitrate for, I'd say, less than a
minute, and hung to let dry.
The exposures vary .... but the problem is w/staining. She used rapid-fix,
or ammonium thiosulfate diluted first @ 1:3 and immediately experienced
staining upon immersion into fix. She then diluted to 1:7 and it lessened
but after 3 prints was very evident again.
I advised to first let soak longer in silver nitrate and prior to printing
make sure the print is totally dry. These images are 16"x20". My next
advice was to use standard fix or sodium thiosulphate at normal strength.
I feel the fix is the problem.
If you have any suggestions I'd appreciate it. Our textbooks are all
checked out.
Thanks
Jack Fulton

***The eye is the Pencil of Nurture***

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