Epa Vial at Thomas Scientific Epa Vial found in: EPA / VOA Vials, Environmental EPA Vials, EPA Water Analysis, Screw Thread, KG-33 Borosilicate Glass, Vials without Closure, VOA Vials -.. screw thread EPA vials for the collection and storage of water samples comply with the guidelines for establishing test procedures for the analysis of pollutants (Ref. EPA Methods 601, 602, 603 and 604).