Comparison : Item # 2013-02, Chromatography, Column, with PTFE Valve, 10mL Nominal Valve, Column ID 11 x 150mm Length
Item # 2013-04, Chromatography, Column, with PTFE Valve , 15mL Nominal Volume, Column ID 11 x 200mm Length
Item # 2013-06, Chromatography, Column, with PTFE Valve, 20mL Nominal Volume, Column ID 11 x 250mm Length
Item # 2013-07, Chromatography, Column, with PTFE Valve, 30mL Nominal Volume, Column ID 15 x 200mm Length
Item # 2013-08, Chromatography, Column, with PTFE Valve, 40mL Nominal Volume, Column ID 15 x 250mm Length