How to remove albumin?

[Rory.Morty]

Hi there!

Any ideas about how to COMPLETELY remove trace amounts of albumin from an 
otherwise pure preparation of protein. MEC is not feasable because the 
molecular weight of the protein of interest is too close to 68 kDa. The 
trace amounts of albumin have not been removed by a number of IEC steps, or 
chromatography on Cibacron Blue or phenyl sepharose. Any ideas?

Rory Morty
e-mail: morty at gate2.cc.unp.ac.za