From: Peter Marshall (petermarshall@cix.co.uk)
Date: 05/24/01-12:47:39 PM Z
> > In case anyone is still confused, chromate is CrO4-, dichromate Cr2O7=
> > (both Chromium (VI)) and the species that does what we want to the
> > colloid is Cr3+ (Chromium (III)).
>
> It was surely a typing mistake: chromate is CrO4=
>
> Alberto
>
>
Yes, thanks for pointing this out - late nights at the keyboard...
Peter Marshall
Photography Guide at About http://photography.about.com/
email: photography.guide@about.com
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Also on Fixing Shadows: http://www.people.virginia.edu/~ds8s
and elsewhere......
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