Re: keeping gelatin

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From: Gerard NIEMETZKY (gerard@atxstudio.com)
Date: 11/13/00-02:38:24 PM Z

We also use 1% of Thymol solution in our Gelatin emulsions (Thymol solution
= 10%thymol in Isopropanol).
You can also use 0.5g of Chlorocresol per Kg of gelatin.

Both are to be used carefully.

Regards 

-- 
Gerard Niemetzky
http://www.atxstudio.com
Ataraxia Studio
3448 Progress Drive, Suite E
Bensalem, PA  19020   USA
Phone 215 245 7871
Fax 215 245 7892

on 11/13/00 2:53 PM, Judy Seigel at jseigel@panix.com wrote:

> 
> Dear gelatin users:
> 
> I'd made a note from discussion on the list that 2 cc of 15% thymol would
> preserve (I forget how much, note buried in alleuvial tides) gum arabic. I
> believe it was Sandy King who said he'd kept -- either gum arabic or
> gelatin -- at room temp successfully for more than a month with addition
> of thymol.
> 
> Last month I added 2 cc 15% thymol to 2 litres of (used) 3% Knox gelatin,
> and left on the shelf in a closed bookcase. The smell of the thymol (of
> which some had spilled into sink) preserved *me* for days, but failed
> abysmally to preserve the gelatin. When I went for it last week, found a
> hellacious liquid that gave new meaning to the word "rotten."
> 
> I'm wondering if I mistakenly remembered it as applying to gelatin, if I
> didn't use enough -- or if anyone has any other clue.
> 
> What else could preserve gelatin? Salicylic acid ?? (Working large, a
> batch of gelatin is a gallon or so, which seems a lot to throw out.)
> 
> I'll add that so far, random and definitely NOT definitive tests of
> brush-on gelatin have given an inferior coat. For instance, last night I
> put a first coat on a large sheet done "brush on", using a tried & true
> emulsion mix. Flaked badly -- as I've never seen in any color but black.
> Hardly the rigorous testing of my usually impartial and scientific
> system, but rather does reinforce subjective *hunch* that bath-sized
> paper works better for me.
> 
> In any event, comments re keeping gelatin would be appreciated. I'm
> wondering meanwhile if hard gelatin heeps better --  this is Knox.
> 
> Judy
> 
> 
> 
>

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