Yingtai: Working Principle of Swing Rotors

Yingtai: Working Principle of Swing Rotors

A swing rotor is a highly efficient centrifugation device characterized by its swing placement of sample tubes during the centrifugation process.

Vertically Placed Centrifuge Tubes
Unlike traditional angle rotors, the centrifuge tubes in vertical rotors are positioned vertically. This alignment ensures that the direction of gravity and centrifugal force are consistent during centrifugation, enhancing separation efficiency.

Centrifugal Force Generated by High-Speed Rotation
When a swing rotor spins at high speed, it generates centrifugal force along the swing axis of the sample tubes. This force is significantly stronger than gravity, enabling rapid movement of particles within the samples.

Density Differences in Sample Components
Under the influence of the swing rotor, the various components within the sample separate based on differences in their density and mass. Denser particles experience greater centrifugal force, causing them to sediment faster toward the bottom of the centrifuge tube, while less dense particles sediment more slowly.

Layered Separation
As centrifugation proceeds, the components within the sample gradually form distinct layers, achieving separation. This layering occurs due to the imbalance between buoyant and gravitational forces acting on particles in media of different densities.

Separation in a Short Time
The swing design of the rotor minimizes the sedimentation distance for particles, allowing separation to be completed in a relatively short time. Compared to horizontal rotors, which require longer centrifugation times, the swing rotor significantly improves operational efficiency.

Swing rotors, with their unique design and efficient working principle, enable rapid sample separation within a short period. This technology finds wide applications in fields such as biomedical and chemical research.