[alt-photo] Re: Casein source

[Alberto Novo]

Marek, 

> I found this interesting link about casein paints. Ammonium carbonate is a solid and well defined chemical. I am going to give it a try
> http://www.earthpigments.com/art/artists-casein.cfm

their recipe is similar to Kremer's:
http://kremer-pigmente.de/Texte/casein.pdf 

differencies:
the ratio casein/ammonium carbonate is 4 in Kremer and 2 in EarthPigments 
(half carbonate in K than in EP),
the concentration is about 16% in K and 12.5 in EP. 

If Kremer's recipe works, then a high content of ammonium carbonate is not 
needed.
16% casein is what I used in my single coat prints with natural earth. 

Alberto
www.grupponamias.com
www.alternativephotography.com/wp/photographers/rodolfo-namias-group