[alt-photo] Re: Re-acidifying papers with sparkling water?

[Loris Medici]

I think best tools for acidifying calcium carbonate buffered paper are
acetic acid (white vinegar) and HCl. Both will form highly soluble
salts, that will leave the paper completely when rinsed.

Regards,
Loris.

2010/4/23  <ender100 at aol.com>:
> John,
>
>
> I've used white vinegar too—worked just fine!
>
>
> Mark Nelson
> www.PrecisionDigitalNegatives.com
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>
> Francis
>
> I've used white vinegar in the past.
>
> John.
>
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>
>
> -----Original Message-----
> From: John Brewer <john at johnbrewerphotography.com>
> To: 'The alternative photographic processes mailing list' <alt-photo-process-list at lists.altphotolist.org>
> Sent: Fri, Apr 23, 2010 2:05 pm
> Subject: [alt-photo] Re: Re-acidifying papers with sparkling water?
>
>
> Francis
>
> I've used white vinegar in the past.
>
> John.
>
> -----Original Message-----
> From: alt-photo-process-list-bounces at lists.altphotolist.org
> [mailto:alt-photo-process-list-bounces at lists.altphotolist.org] On Behalf Of
> francis schanberger
> Sent: 23 April 2010 15:52
> To: The alternative photographic processes mailing list
> Subject: [alt-photo] Re-acidifying papers with sparkling water?
>
> This is inspired by the lack of strong acids at home (where my dimroom is)
> but has anyone tried to re-acidify paper buffered with calcium carbonate
> using carbonated water (not club soda)? I trying to track down the exact pH
> but I believe it is around 3. Our major super market chain sells a generic
> brand of sparkling water called Big K and it costs about $2.00 a six pack.
>
> It's been a while since my undergrad chemistry class but would there be an
> issue with using a weak acid and base that share the same anion?
>
> -francis
>
>
>
> --
> francis schanberger
>
> www.frangst.com
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