Medium Length ST Glass Stoppers
Stoppers can be used with laboratory glassware such as flasks, mixing cylinders, and separatory funnels.
- Sizes Standard Taper 10/18 through Standard Taper 19/22 are solid
- Sizes Standard Taper 24/25 and larger are hollow
- Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements