Centrifuge Rotors

Rotors paired with centrifuges serve various applications, such as clinical, blood banking, microbiology, and molecular biology. Generally, rotor size is inversely proportional to maximum speed capacity—larger rotors have lower speeds. Rotors come in materials like aluminum, titanium, and, more recently, carbon fiber for fixed angle designs.

Smaller swinging bucket rotors can handle rate-zonal and isopycnic separations in ultra-centrifuge settings. Larger models are ideal for processing large-volume samples, such as blood bags and tissue culture at lower speeds. These rotors also allow batch harvesting of whole cells.

Fixed angle rotors hold tubes at a set angle, causing the solution to reorient as the rotor spins. They're the most common and are used for basic pelleting tasks, such as bacteria or mammalian cell pelleting. Rotor efficiency is measured by the K factor, and fixed angle rotors are also suitable for isopycnic separations.

As expected, vertical or near-vertical rotors hold tubes upright during rotation. While not useful for pelleting, they excel at isopycnic separations and are common for DNA, RNA, and lipoprotein isolations.

In-Stock Rotors Ready to Ship from Our Trusted Warehouse

Most of the used and reconditioned centrifuge rotors shown on our website is in stock and available. Orders ship from our 30,000 square foot warehouse in Haverhill, MA. Our surplus lab equipment is reconditioned for many types of laboratories, including biotech, biomedical, medical research, chemical, pharmaceutical, and university and hospital research laboratories. We have been a reliable source for used laboratory and scientific equipment since 1969.