Glass Vial 4 Ml found in: Storage Vials, Vial Only, 4 mL Assembled Screw Thread Vial Kits, 51 Expansion Borosilicate Glass Vials, Vials, 13mm Clear Glass.. material is black phenolic; the cap and the liners are autoclavable. With all the organic vials, Teflon and type 1 glass are the only surfaces that will make contact with your sample. .