These 4oz cobalt blue bottles come with a plastic cap and have 22/400 necks. Sold in a pack of 12 dropper bottles.
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.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.