dialysis product needed

[Jeffrey A. Cohlberg]

D. KIM wrote:
> 
> I used to use the collodion bags from S&S.  Sometimes, however, dialysis
> causes large amounts of water to go into the bag (at least, with regular
> clipped bags, they pick up water and become "pressurized".).  With the
> open top of the collodion bags, isn't there a chance that the bag will
> overflow as it comes to equilibrium (with large concentration of the
> macromolecule?).

Generally there is little or no change in volume when we use the 
Sartorius bags.  We do cover the top of the setup with a tautly 
stretched piece of Parafilm.
-- 
Jeffrey A. Cohlberg, Professor
Department of Chemistry and Biochemistry
California State University, Long Beach
1250 Bellflower Blvd.
Long Beach, CA 90840
phone (562) 985-4944	fax (562) 985-8557