[alt-photo] Re: Casein source

[Christina Anderson]

Marek,
You can buy the caseinate from Kremer premixed or in powder form, here:
http://kremerpigments.com/shopus/index.php?lang=ENG&list=0210
Christina Z. Anderson
christinaZanderson.com

On Apr 11, 2011, at 2:33 PM, Marek Matusz wrote:

> 
> Chris,
> Trying to follow up on this long strand of posts.
> First of all you images are wonderful and I am so inspired with earth tone tricolors. I am not quite sure what casein source and salt are you using. DId you buy ammonium caseinate (where from), or did you make it from scratch? 
> Marek
> 
>> From: zphoto at montana.net
>> Date: Mon, 11 Apr 2011 09:19:49 -0600
>> To: alt-photo-process-list at lists.altphotolist.org
>> Subject: [alt-photo] casein
>> 
>> Dear All,
>> 
>> I am continuing to work out the casein details, but thought I'd share a picture that applies to what I think Peter said, about the viscosity of casein that goes way up with percentage solutions. Peter, you are NOT kidding.
>> 
>> http://christinaanderson.visualserver.com/Text_page.cfm?pID=2076
>> 
>> This is a picture of the immediate viscosity of 10% vs 15% sodium caseinate.
>> 
>> Have to go to school now but when I return I will see if it eventually liquifies, but this explains to me the vast differences between Schmincke and Kremer sodium caseinate/borax solution. The thick stuff is 15% and if Jacques was right, it may be Schmincke thinner stuff is 10-12%.
>> 
>> No conclusions drawn quite eyt, but that ammonium caseinate behaves quite differently, whipping up in either concentration as whipped egg whites and then going into solution within a couple hours.
>> 
>> More thoughts on this later but at least this will start a Monday morning conversation off.
>> 
>> BTW more caseins up on my website in the Past Lives folder. All are made with earth pigments (iron oxides, ultramarine no gum arabic), because I wanted to make sure not to muck up my observations with watercolor that contains gum arabic. Now comparing same images made with the usual magenta/thalo/azo yellow watercolors for comparison.
>> 
>> Taught casein in class last Wednesday and one student got a full tricolor in 2 hr. That's enough to make the process appealing, huh? A couple students were immediately hooked, and this is while they are still in their gum unit.
>> Chris
>> 
>> Christina Z. Anderson
>> christinaZanderson.com
>> 
>> _______________________________________________
>> Alt-photo-process-list | http://altphotolist.org/listinfo
> 		 	   		  
> _______________________________________________
> Alt-photo-process-list | http://altphotolist.org/listinfo