Griffin Tall Form Beakers with Single Capacity Scale. Includes a thick, slightly flared, beaded top, and a spout designed to have excellent pouring characteristics. These beakers have uniform walls throughout and are made of 3.3 borosilicate glass. 3.3 borosilicate is the highest level of inert glass available. All sizes have a durable matte finish marking area for use with an ordinary pencil. An easy-to-read white graduated scale is provided for measuring and/or mixing liquids. Designed from ASTM Specification E960, Type I requirements.