Corning Pyrex 100mL Economy graduated cylinders are double-metric calibrated "To Contain" (TC). Height: approximately 254mm. Outer Diameter: approximately 29mm. Graduation interval: 0.1mL. Not sterile. Reusable, economy. Borosilicate Glass Code 7740. Pourout top. No stopper. No bumper guard. Corning #: 3025-100.