Greater separation of liquids which contain larger solids (separation of waste slurry or sand sized particles).įixed angle rotor – is the rotor, which holds tubes in the exact same fixed angle all the time, usually 45 degrees.However, this rotor is relatively inefficient for pelleting. The longer path length permits better separation of individual particle types from a mixture. This rotor is particularly useful when samples are to be resolved in density gradients.

Instead buckets are attached to the rotor in a way, that allows them to spin horizontally (angle relative to the axis of rotation - 90 degrees). Swing out rotor (also known as bucket rotor, rotor with variable angle) is the rotor, in which tubes are located in the buckets (tube-holders) and those buckets are not rigidly attached to the rotor with certain angle. Let’s have a look at what a swing angle rotor and fixed angle rotor is. Both types of rotor serve a purpose and both have advantages and disadvantages over the other. When getting enquiries for laboratory centrifuges, we are often asked what the difference is between a swing out rotor and a fixed angle rotor. Centrifuges force this process along much more quickly and efficiently. Smaller, less-dense particles may also migrate down, but not always some particles will never settle, but remain suspended in solution. It’s all about gravity and mass: particles in a heterogeneous solution will, given enough time, separate based on their size and density. Centrifugation is one of the most widely used laboratory techniques for the separation of materials in the fields of biochemistry, molecular biology, medicine, food sciences and industry.

Centrifuge swing out rotor