Plastic Vial Polypropylene 11 mm Snap Top 300 µL <2 µL PTFE/Silicone, preSlit AR0-9692-12-C AR0-9692-13-C bioZen Columns (mm) Biocompatible Guard Cartridges 50 x 2.1 100 x 2.1 150 x 2.1 50 x 4.6 100 x 4.6 150 x 4.6 250 x 4.6 for 2.1 mm for 4.6 mm Holder