DWK Life Sciences (Kimble) Clear Vials with Black Phenolic Caps and Rubber Liners, 33 Expansion Glass
These clear screw thread sample vials are economical and save time in the lab. They have closed-top black phenolic closures with rubber liners, unattached. Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements.