KIMBLE Medium Length Hex Head Hollow Glass Stopper, 14/20

Stoppers are used with laboratory glassware such as flasks, mixing cylinders and separatory funnels.

Hollow, hexagonal head medium length Standard Taper stopper that is easily gripped

May be set on the flattened top to avoid contamination of the ground surface

Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements