Autosampler Vials (189 items). HPLC & GC Autosampler Vials 4ml Screw Neck Vial, 45 x 14.7mm, amber glass, 1st hydrol. class, with assembled 13mm 40mL 24-400 Amber Screw Top EPA VOA Vials w - Filtrous. Screw closure; Amber borosilicate glass and white PP cap material; PTFE/Silicone septa; Closed cap; Ideal for water sample collection for ...