20mL Corning Pyrex beaker, graduated, with spout, manufactured with uniform wall thickness, offers optimum balance between thermal shock resistance and mechanical strength. All sizes have an extra large marking spot. Material: Borosilicate Glass Code 7740. Capacity: 20mL. Beaker Style: Griffin. Graduation Range: 5-15mL. Graduation Interval: 5mL. Height: 40mm (approx). Outer Diameter: 32mm (approx). Reference: ASTM E-960. Corning #: 1000-20.