Centrifuge Tube Nominal Capacity - Metric 100 mL Body Diameter - Metric 18 mm Nominal Capacity - English 3.38 oz Body Material Type I Borosilicate Glass Tube Type Centrifuge Tube Body Color Clear Graduated Yes Includes Closure Yes Closure Material Rubber For Use With Centrifuges Special Features Etched Calibration Milliliter Markings Sand Spot Short Cone Style Tube Standard Line Style Tooled Top Style Tube is Not Certified But is Factory Verified Yellow Frit Markings