Re: Sodium Bisulfite

Katharine Thayer wrote:
>
> Giovanni Di Mase wrote:
> >
> > There is also sodium sulfite that works as sodium bisulfite according to
> > James book.
> > But I was told that the sulfite does not create the solution acid and
> > therefore the cromium component becomes insoluble cromium.
> > What does this mean in terms of stains I don't know.
> > Can anybody help?
>
> Giovanni,
> I'd say, given the contradictory information you've been given, that the
> best way to find out how sulfite compares to the others is to try it
> yourself, side by side with sodium bisulfite or potassium metabisulfite,
> and see what happens. I don't agree with many things James says, but it
> seems curious that Photographers' Formulary would be suggesting sodium
> sulfite for this purpose, as I think was mentioned sometime earlier in
> this discussion, if it didn't work for this purpose.

To rephrase for clarity: what I'm saying here is that I don't always
agree with everything James says, but if Photographers' Formulary says
that sodium sulfite works as well as sodium bisulfite, I'd be inclined
to give them the benefit of the doubt. But the only way to know for
sure, in the absence of definitive information, is to try it and see
for yourself.
kt
Received on Thu Oct 7 11:33:49 2004