[alt-photo] Re: casein history

[Christina Anderson]

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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