Made of borosilicate glass, the jar features a beaded rim and a circular base. Sized properly to eliminate surface tension effects that lead to inaccurate readings * Model 21050-1000-L and 21000-1000-L have a graduation line at 1000 mL for precise filling and are used as a sedimentation cylinder SPECIFICATIONS: * Autoclavable: True * Capacity: 250 mL * Color: Clear * Maximum Hydrometer Length: 280 mm * Quantity: 1 Each * Type: Jars * Volume: 250 mL * Warranty: 1 Year