Glass balls can be used in the classroom and lab setting for many different experiments. These glass balls are 1" (25mm) in diameter, and are sold by the dozen.
PRODUCT WARNINGS
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
This product consists of marbles, making it a choking hazard. Only use with adult supervision.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.