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Old 18th February 2017, 03:14 PM
Mike O'Pray Mike O'Pray is offline
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Join Date: Oct 2008
Location: Daventry, Northants
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Yes, I must admit to never having seen a scientific explanation for alkali stop bath. From what I remember Peter Hogan's only explanation was along the lines of "why subject your film to an acid fixer that delivers a "shock" to it after coming out of an alkali developer.

I may be doing him an injustice but I cannot now check his text as the Peter Hogan site seems to be fault 403 "access forbidden"

I think there is still a belief in some quarters that in paper printing an alkali fixer is beneficial. Something to do with making it easier to rid the paper of fixer in the washing cycle than is the case with acid fixer?
Again I have no idea of the scientific pros and cons

Mike
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