SINGLE AND DOUBLE METRIC SCALE, GRADUATED, TO CONTAINGraduated Cylinders meet ASTM E-1272 Class A, Style I Specifications & USP Standards for Volumetric Glassware. Feature hexagonal bases for added stability. All cylinders with the exception of the 2000 ml size feature protective, polyethylene and hexagonal bumper guards. All markings are in durable, white enamel.Graduation Range: 50mlGraduation Interval: 3.5-50.0mlO.D. x Height: 24x218mmTolerance: Double Metric ±0.05 mlScale: 0.5mlQuantity: Pack of 4