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Eisco’s hollow glass stopper is made from high-quality 3.3 borosilicate glass, ensuring excellent chemical resistance and durability. It features a hexagonal top for easy gripping and a round end for secure sealing. Designed with a 24/29 cone joint, this stopper fits standard laboratory glassware.
Measuring 2.25 inches long with a 1.25-inch wide top, this stopper is ideal for sealing glassware in professional laboratories, research facilities, and educational settings. Its durable construction makes it suitable for long-term use in various chemistry and scientific applications.
Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.
Stephen D Davidson
Reviewed in the United States on February 27, 2025
To small...should advertise diameter.
Carlene Johnson
Reviewed in the United States on April 5, 2022
Was a bit smaller than I was expecting
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