Column : Shodex AFpak AGA-894 (8.0mmID*50mm) Eluent : (A): 0.01M TRis-HCl buffer(pH7.5) + 0.01M NaCl (B): 0.01M TRis-HCl buffer(pH7.5) + 0.5M NaCl Step gradient: 0min to 12min, (A) to (B) Flow rate : 0.5mL/min Detector : UV(280nm) Column temp. : Room temp.