This polystyrene spinner flask with one aseptic connector has a paddle and shaft made of polypropylene and caps from high density polyethylene. It is made of USP Class VI and ISO 10993-18 compliant materials. Extended paddle design ensures constant top-to-bottom motion of the liquid without having to adjust the height of the paddle. Bottom contours on the paddle hug the shape of the flask, eliminating dead spots. Two wide neck openings for easy pouring; easily accept a 100mL pipet. The spinner flask is preassembled, sterile and disposable. Maximum Working Volume: 3L. Dimensions (H x D): 203.2 x 87.3mm. Sidearm Openings: 2. Sidearm I.D.: 39mm. Sidearm Style: 45°. Sidearm Cap Diameter: 54mm. Cap Style: Screw Cap. Cap Color: Orange. Thread Finish: 45 GL. Corning® #: 3579.