Columns : Shodex OHpak SB-G (6.0mmID*50mm) + SB-806 HQ + SB-805 HQ (8.0mmID*300mm each) Eluent : 0.5M Acetic acid + 0.5M Sodium acetate aq. Flow rate : 1.0mL/min Detector : Shodex RI Column temp. : 40deg-C