Clear 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).
Clear EPA vials are fabricated from KG-33 borosilicate glass.
Open top closures and PFTE-faced silicone septa or solid top PFTE-faced white rubber-lined closures are available separately.
While vials are not "pre-cleaned", they are packaged in a plastic shrink wrap module lehr-clean as they come from the end of the production lehr. They are then placed into a corrugated shelf-pack.