protein polysorbate 80 separation method? - (Nov/13/2007 )

hi
would any one suggest me a method for separating protein and polysorbate 80? i want to buffer exchnage from a polysobate formulation to a non-polysobrate formulation..?

membrane protein or water soluble protein?

Then use hydrophobic beads to absorb TW80. BioRad sells these beads, SM2. Pull also sells silicon based beads with such activity.