Lotus Connect Store › Polypropylene Graduated Cylinder, Octagonal Base, 500ml - Pack of 4 Polypropylene Graduated Cylinder, Octagonal Base, 500ml - Pack of 4 $18.41 Polypropylene graduated cylindersOctagonal baseAutoclavableThese polypropylene graduated cylinders have a hexagonal base, are made from a single piece and are autoclavable. Quantity: Add To Cart Added! Polypropylene graduated cylindersOctagonal baseAutoclavableThese polypropylene graduated cylinders have a hexagonal base, are made from a single piece and are autoclavable.