[pure-silver] Re: Food Grade Chemicals
- From: Robert Hall <robert.g.hall@xxxxxxxxx>
- To: "pure-silver@xxxxxxxxxxxxx" <pure-silver@xxxxxxxxxxxxx>
- Date: Thu, 11 Jul 2013 07:18:59 -0600
Food grade is usually overkill for photo grade. I find a lot of my chems
can have all sorts of "dirt" in them and I have not found an instance where
they have caused me any alarm.
Best of luck!
Robert Hall
www.RobertHall.com
www.RobertHall.com/workshops
www.facebook.com/robert.g.hall
On Thu, Jul 11, 2013 at 3:46 AM, Eric Nelson <emanmb@xxxxxxxxx> wrote:
> 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-photography.html)
> and I'm hoping for a more concise discussion from personal experiences or
> 2nd hand experiences even. :)
>
> e
>
>
>
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