38mm Diameter Aluminum Tube Cap Assembly, Quantity of One

This accessory is required for the Thickwall Polypropylene Ultracentrifuge Tube (part # 355643) and the Thickwall Polycarbonate Ultracentrifuge Tube (part # 355628). Adapter for Tubes in Beckman Coulter Rotors for use in Ultracentrifuge Rotors: Type 45 Ti (part # 339160) Caps are optional for these Thickwall tubes. In the Type 45 Ti the filling level for 355643, 355628 is 47 mL. For 355640 and 355630, the filling level is 8 mL. The Maximum speeds for these open-top tubes without a cap are: Polycarbonate: 30,000 RPM, Polypropylene: 15,000 RPM.