Re: Stock Paint:Gum Solutions?

[Kees Brandenburg <ctb@zeelandnet.nl>]

Hi Marek,

That's a bit confusing. When I measured my former mix (1 part gum + 3  
parts water) some year ago when Chris asked us about our gum mixes it  
turned out to be near 14 baumé. Now I use a heavier 1 part gum + 2  
parts water mix.

As I have both concentrations at hand I just (re)measured both mixes  
with my simple winemakers hydrometer.

these are the results:

My 1+3 mix has a specific gravity of 1.101 this is 13,3 baumé
My 1+2 mix has a specific gravity of 1.132 this is 16,9 baumé

You can lookup the baumé grades here:  http://ilpi.com/msds/ref/baumescale.html

And some pictures from the lab: http://polychrome.nl/techlog/gum-concentration

kees


On 23 okt 2008, at 16:40, Marek Matusz wrote:

> Kees,
> I use 14 baume ready gum solutions (about 30% as I recall), so it is  
> the same as yours 1:2.
> Marek