Vial found in: EC Vial Series, Dram Sample Vials, Storage Vials, Vial Only, Headspace Vials, Clear Serum Tubing Vials, TrueLine Cryogenic Vials, Transport.. Clear glass vials with 20mm crimp seal finish are designed to fit most headspace autosamplers Flat bottom vials maximize heating efficiency when used with bottom Round bottom vials are more easily handled by robotic arms that lift the vial