Comparison : Item # 2000-02, Chromatography, Column, Funnel Top, Column ID 7mm x 145mm Length, 25mL Capacity, 215mm Overall Length
Item # 2000-04, Chromatography, Column, Funnel Top, Column ID 6mm x 200mm Length, 50mL Capacity, 280mm Overall Length
Item # 2000-06, Chromatography, Column, Funnel Top, Column ID 7mm x 200mm Length, 50mL Capacity, 280mm Overall Length
Item # 2000-08, Chromatography, Column, Funnel Top, Column ID 8mm x 200mm Length, 50mL Capacity, 280mm Overall Length