Stability of sodium carbonate buffer

Louis Hom lhom at OCF.Berkeley.EDU
Wed Feb 22 10:01:49 EST 2006

In article <dtgugu$ja9$5 at>,
DK <dk at> wrote:
>If filter-sterilized (or good amount of azide added) and in a tightly 
>closed vessel ... forever, basically. 

	I would be at least a little worried about the effects of running 
the buffer through a vacuum filter, unless your pH is well above 7.4 (1st 
pKa+1), since below that pH you are in equilibrium with H2CO3 (which can 
yield gaseous CO2).
Lou Hom >K'93			     
lhom at 	    

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