5 Ml Vial found in: Vial 5 ml, Vial, VOA, 40 mL with 5 ML Methanol & Tare Weighed, Vial, VOA, 40 mL with 5 ML Sodium Bisulfate & Tare Weighted.. these vials are assembled with the following materials: Type 1 borosilicate glass, PTFE/silicone septa, and a polypropylene cap.