The polypropylene plug-type cap makes a tight seal on the 16x100mm test tube. Sold as a pack of 200.
WARNING: This product can expose you to chemicals including nickel oxide, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to .
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.