Can you describe the stain in more detail. The selenium staining
I've seen was due to decomposition by acid after incomplete washing and
was peach colored. This is the effect that requires treating prints
fixed in an acid fixer with some sort of alkali bath before toning.
If you have not been getting stains before then _something_ must
have changed. I don't have a definite clue but going over your whole
routine may turn something up. Anything new there, newly mixed something
or new paper even if its stuff you have been using?
On 3/6/2016 4:46 PM, Tim Daneliuk wrote:
For some time now, I've noticed that the unexposed areas of a print
show evidence of a what appears to be selenium staining - say on the
borders of the print. I've changed nothing in my chemical formulation
or wash discipline.
Any ideas on what the culprit is here?
