Beaker Griffin 250 mLMade from Boro Glass 3.3, Low Form Graduated, Heavy, Even Wall Thickness.Specifications:Student GradeCapacity: 250 mLGraduated Interval: 25 mLCapacity Tolerance: +/- 2 mLSingle Scale is White, Begins at 50 mLDimensions:Base Diameter: 2.77″Opening: 3.09″ O.D.Opening: ~ 2.65″ I.D.Overall Height: 4.92″GSC InternationalBG250