KIMBLE® Hollow, Glass, Pennyhead, Stoppers, 1/Case

Stoppers are 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.

Read Less