From: Sandy King (sanking@CLEMSON.EDU)
Date: 10/27/03-10:03:41 AM Z
>> Couldn't you just (on a scrap print) do a silver bleach -- potassium
>> ferricyanide or the like -- and then fix?
>That's a good test if you are concerned about the stability of image
>against oxidative attacks but it wouldn't be a good test for detection
>of metallic silver. If silver surface is converted to something that
>cannot be bleached due to the toning process, for example, you'd get a
>false negative, while you might be converting the image completely to
>something non-silver that also gets bleached, leading to a false
>"Reality has always had too many heads." (Bob Dylan, Cold Irons Bound, 1997)
How about soaking print in a 3-5% solution of nitric acid, doing
reflective readings before and after? Would that test for the
presence of metallic silver?
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