Jun 30, 2021 · Analytical Workflow Savings | Sigma-Aldrich 2 mL, amber glass vial, wide opening, crimp top PTFE/silicone septum 100 29128-U 15% or ask Account Manager for bulk* Snap (Kit of vials and caps) 2 mL, clear glass vial, PTFE/silicone septum, black PP cap 100 29142-U 15% or ask Account Manager for Thermo Scientific Clear VOA Vials with 0.125 in. Septa | | Clear VOA Vials with 0.125 in. Septa.