Wheaton* Open-Top Sample Vials in Lab File

Manufactured from Wheaton 33 low extractable borosilicate glass, (meets ASTM Type I Class A and USP Type I Standards) Ideal for use in water sampling according to EPA 40 CFR 136, Guidelines for Establishing Test Procedures for the Analysis of Pollutants.

The white polypropylene open top screw cap has a specially designed septum of 5 mils of PTFE facing 120 mils of silicone. The polypropylene is glass-filled to provide extra chemical and heat resistance compared to standard polypropylene. The septa are bonded to the cap providing a permanent connection that is ideal for repeat injections.
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