These Erlenmeyer flasks have a narrow mouth, ground glass joint 24/40, and are graduated. This 250ml capacity flask is made of quality borosilicate glass. Industrial Quality. Made of high quality, heavy duty, borosilicate 3.3 glass with excellent strength against thermal expansion and breakage. Microwavable and autoclavable, with superior chemical durability. Can withstand high temperatures and thermal shocks.
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 to www.P65Warnings.ca.gov.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.