Sample Vials for HPLC – Membrane Solutions. LBSV202CSS White PTFE/Red silicone septa + snap cap with hole, for 2ml snap top vial 100pcs $4.90 LBSV302CSS Red PTFE/White silicone septa + snap cap with hole, for 2ml snap top vial 100pcs $4.90 LBSV222CSB Blue screw cap with hole with bonded Blue PTFE/White silicone septa, Pre-slit, for 2ml 9-425