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13 mm Diameter Noryl Floating Tube Spacer, Quantity of One
Required for the Quick-Seal Polypropylene Ultracentrifuge Tube (part #s 345829, 357327) and Quick-Seal Konical Polypropylene Ultracentrifuge Tube (part # 358647).
Adapter for Tubes in Beckman Coulter Rotors for use in Ultracentrifuge Rotors:
SW 55 Ti (part #s 342194, 342196)
MLS-50 (part #s 367279, 367280)