VEE GEE, Low-Form Griffin Beakers available in a Five Piece Set. VEE GEE 20229-Series Beakers meet ASTM E-960 Type I Specifications for Classification, Design, Capacity & Dimensions, and Markings. These beakers feature easy-pour spouts, white, permanen graduations, and large marking squares. Made from high quality borosilicate glass with a low coefficient of expansion Manufactured with uniform wall thickness resulting in th optimum balance between thermal shock resistance an mechanical strength. Accuracy: ±5% of full capacity. ^ WARNING:This product can expose you to chemicals including lead, which is known to the state of California to cause cancer and birth defects or other reproductive harm.For more information go to: www.P65Warnings.ca.gov