Poly(N-vinylpyrrolidone), Pharmaceutical grade, MW 40,000
Poly(ethylene glycol) [MW 400]
Dextran
Poly(2-vinylpyridine N-oxide)
Polyethylene, chlorinated, 25% Cl
Polystyrene [MW ~ 20,000]
Poly(n-butyl methacrylate)
Poly(ethylene/maleic anhydride) 1:1 (molar)