-These lab-grade cork stoppers are size 14. Size 14 means that the stopper is roughly 5/4" tall, 5/4" in its top diameter, and 65/64" in its bottom diameter. They are sold in a pack of 100 stoppers.Lab-grade cork stoppers are high-quality cork plugs specifically designed for laboratory use. They are used to seal glassware, flasks, test tubes, and bottles, preventing contamination, evaporation, or spillage while allowing for some breathability, depending on the type of cork.The natural cork is safe for use with food products.The natural cork has imperfections including holes.Sealing Flasks & Bottles – Used in Erlenmeyer flasks, test tubes, and reagent bottles to keep contents secure.Preventing Contamination – Keeps samples and solutions protected from airborne contaminants.
PRODUCT WARNINGS
WARNING: This product can expose you to chemicals including lead, which are known to
the State of California to cause cancer, birth defects, or other reproductive harm. For more information go
Choking Hazard
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.