Sample Vials, Screw Thread, Borosilicate Glass, Kimble Chase, DWK Life Sciences Supplier: DWK Life Sciences General-purpose, clear and amber borosilicate glass vials. Volumes range from 0.5 to 11 drams. Certifications: Meets USP Type I and ASTM E438, Type I, Class A and B requirements. Ordering information: Available with or without screw caps.