SIBATA Class A Graduated Cylinder with double-metric scale, graduated, to contain, and calibration temperature of 20C. The graduated cylinder features hexagonal base for added stability* Made out of high-quality borosilicate glass* Double metric scale* Contains durable white enamel graduation markings* Wide range of sizes available (5 mL to 2000 mL)* Feature hexagonal bases for added stability* All sizes (except 2000 mL) come with a protective bumper guard* Calibration Temperature: 68F (20C)* Exceeds ASTM E-1272 Class A Standards * Graduation Interval: 0.5 mL* Graduation Range: 3.5 to 50.0 mL* Material: Borosilicate Glass* Scale Type(s): Double Metric* Tolerance: 0.25 mL* Quantity: Pack of 4