These Semi-Micro Thistle Tubes have stems that are 4mm in diameter and 300mm long. They are made from borosilicate glass.
WARNING: This product can expose you to chemicals including arsenic, 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.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.