Column : Shodex Asahipak ES-502C 7C (7.5mmID*100mm) Eluent : (A); 50mM Sodium phosphate buffer(pH7.0) (B); (A) + 0.5M NaCl Linear gradient: 0min to 20min, (A) to (B) Flow rate : 1.0mL/min Detector : UV(280nm)