Column : Shodex AFpak ALS-894 (8.0mmID*50mm) Eluent : (A); 0.1M Sodium acetate(pH7.4) (B); 0.1M Sodium acetate + 0.2M 6-aminohexanoic acid(pH4.0) Step gradient: (A) to (B) Flow rate : 1.0mL/min Detector : UV(280nm) Column temp. : Room temp.