[Alt-photo] Re: Food Grade Chemicals

[eric nelson]

Nope I can't either!


On Fri, Jul 12, 2013 at 1:45 AM, Mustafa Umut Sarac <
mustafaumutsarac at gmail.com> wrote:

> Lab Grade Erythrosine from Sigma : 1 grams 600 dollars
> Erythrosine from alibaba.com         : 1 grams 30 cents
>
> You can pay 2000 times more money , I cant.
>
> Umut
>
>
>
> On Thu, Jul 11, 2013 at 6:41 PM, eric nelson <emanphoto at gmail.com> wrote:
>
> > That's exactly what I was thinking too Bob.
> > Thanks
> > to
> > all
> > for the reassurance!
> >
> >
> >
> > On Thu, Jul 11, 2013 at 10:30 PM, BOB KISS <bobkiss at caribsurf.com>
> wrote:
> >
> > > DEAR ERIC,
> > >         Many moons have passed, Kimosabe, since my father worked for
> > Merck
> > > and Co...somewhere around the late 30s and then he was a pharmacist's
> > mate
> > > on ships in the Merchant Marines during WW II.  But he taught me at the
> > > very
> > > beginning of my photographic endeavors (around 12 years old) that
> > > Photographic Grade chemicals were well below Food Grade in purity and
> > only
> > > slightly better than Technical Grade.  Now this was half a century ago
> > so I
> > > don't know if either the grading system has changed or my memory serves
> > me
> > > properly.  The only time I would truly care about better than food
> grade
> > > (Lab or Reagent grade) would be with very expensive metal salts
> (silver,
> > > gold, platinum, palladium) and other reagents in their respective
> > > processes.
> > > Other than that you should be fine.
> > >                         CHEERS!
> > >                                 BOB
> > >
> > > -----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
> > > eric nelson
> > > Sent: Thursday, July 11, 2013 7:26 AM
> > > To: alt-photo-process-list at lists.altphotolist.org
> > > Subject: [Alt-photo] Food Grade Chemicals
> > >
> > > This is a cross post so sorry if you've getting it again.
> > >
> > > I've *finally* found ONE chemical supplier here that has some of the
> > > chemicals I need and use, but it turns out that they only supply "food
> > > grade" chemicals.
> > >
> > > Now this means that the prices can be cheap, which is good.  While
> > talking
> > > to them, I asked about their prices, which they don't list on their
> > site. (
> > > http://www.ucs1986.com/chemical.htm)  They asked me which chems I
> > wanted,
> > > so quickly scanning the list online I figured Sodium metabisulfite
> would
> > > give me a good benchmark as to their prices.  1 kilo is 82 THB which
> > equals
> > > $2.63.
> > >
> > > Score!
> > >
> > > Umm, maybe!
> > >
> > > So my question is, how usable are food grade chemicals in photography?
> >  My
> > > guess is that with something like a metal salt (not sure what that
> would
> > be
> > > doing in "food") in food grade might not be the best choice.  This
> > subject
> > > has been covered at length on this apug posting,  but goes on ad
> nauseum
> > (
> > >
> > >
> >
> http://www.apug.org/forums/forum37/61248-food-grade-chemistry-ok-use-photogr
> > > aphy.html<
> >
> http://www.apug.org/forums/forum37/61248-food-grade-chemistry-ok-use-photography.html
> > >
> > > )
> > > and I'm hoping for a more concise discussion from personal experiences
> or
> > > 2nd hand experiences even. :)
> > >
> > > e
> > >
> > > --
> > > Eric Nelson Photography
> > > 086 343 1612
> > > http://ericnelsonphoto.tumblr.com/
> > > https://www.facebook.com/EricNelsonPhotographyBangkok
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> > >
> >
> >
> >
> > --
> > Eric Nelson Photography
> > 086 343 1612
> > http://ericnelsonphoto.tumblr.com/
> > https://www.facebook.com/EricNelsonPhotographyBangkok
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> > Alt-photo-process-list | lists.altphotolist.org/mailman/listinfo
> >
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-- 
Eric Nelson Photography
086 343 1612
http://ericnelsonphoto.tumblr.com/
https://www.facebook.com/EricNelsonPhotographyBangkok