Centrifuges

A centrifuge separates components by spinning samples at high speeds, generating centrifugal force that drives denser particles outward toward the bottom of the container. Less dense components remain closer to the top. This process enables efficient separation of solids from liquids or different phases within a mixture based on density differences.

A microcentrifuge is designed for very small sample volumes, typically in microtubes, and operates at higher speeds to achieve rapid separation. Standard centrifuges handle larger volumes and may offer a wider range of rotor configurations. The choice depends on sample size, required force, and application type.

Refrigerated centrifuges are necessary when working with temperature-sensitive samples such as proteins, enzymes, or nucleic acids. They prevent heat buildup during operation, which can degrade samples. For routine applications involving stable materials, non-refrigerated centrifuges may be sufficient.

Compatibility depends on the rotor type and adapter configurations. Manufacturers specify which tube sizes and formats can be used with each rotor. It is important to verify these specifications to ensure proper fit, balanced loading, and safe operation during centrifugation.

Fixed-angle rotors hold tubes at a constant angle, allowing rapid pelleting of particles along the side and bottom of the tube. Swing-out rotors allow tubes to move into a horizontal position during spinning, providing more uniform separation, particularly for density gradient applications. The choice depends on the separation method required.