[alt-photo] Re: casein history

[Marek Matusz]

Chris Casein defitely needs a preservative. Mine is Consan 20 (garden and general use bactericide/fungicide). That is what I had at hand when I made the first solution. Marek
 > From: zphoto at montana.net
> Date: Sat, 14 Jul 2012 10:06:18 -0400
> To: alt-photo-process-list at lists.altphotolist.org
> Subject: [alt-photo] Re: casein history
> 
> Hi Marek,
> 
> Good points, that a year old casein is fine and little dark reaction in your neck of the woods which I assume is HOT. 
> 
> I've had the same solutions for over a month and they have not gone bad, but I have preserved with thymol.
> 
> Chris
> 
> Christina Z. Anderson
> christinaZanderson.com
> 
> On Jul 13, 2012, at 12:58 PM, Marek Matusz wrote:
> 
> > 
> > Chris,I have not tried this approach yet, my bag of sawdust went missing. On the other hand I have been making some prints, mostly monochrome for about a year now. I have also made some prints from the one year old casein solutiojn, actually it was more then a year old. Works just fine. It is interesting that the first solution that I ever made turned to be the best recipe.Another interesting tidbit is that I have exposed and developed one day old paper checking for the signs of dark reaction and found none. There is one more piece from that batch that I will let sit for perhaps another day or two before exposing and developing. As to your other questions I read the PF article years back, but did not think of it much at the time (in terms of my own interest). I only got interested in it last year with the posts on the list.
> > 
> >> 
> >> Also, Marek, you were talking about Fresson maybe containing casein. The amount of casein/gelatin I have come across is 10-30% casein to gelatin. Have you tried it yet?
> >> 
> >> Chris
> >> 
> >> Christina Z. Anderson
> >> christinaZanderson.com
> >> 
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