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