Column : Shodex IEC DEAE-825 (8.0mmID*75mm) Eluent : (A); 0.1M NaH2PO4 aq./CH3CN=80/20 (B); 0.5M NaH2PO4 aq./CH3CN=80/20 Linear gradient: 0min to 60min, (A) to (B) Flow rate : 1.0mL/min Detector : UV(260nm) Column temp. : 25deg-C