Thermo Electron Corporation CR 4i Refrigerated Centrifuge

• Separation of biological samples such as blood, urine, and cell cultures in clinical laboratories.
• Processing of DNA, RNA, and protein samples in molecular biology and biotechnology research.
• Purification and concentration of viruses and subcellular components.
• Sample preparation for analytical techniques in pharmaceutical research and development.

Typical capacity

Refrigerated centrifuges of this class commonly accommodate swing-out rotors with capacities up to 4 x 750 mL or fixed-angle rotors for multiple smaller tubes.

Speed range

Units of this type typically offer speed ranges from a few hundred up to around 8,000 rpm.

Temperature control

Commonly, these centrifuges provide a temperature range from approximately -9°C to 40°C for sensitive sample processing.

Footprint

Benchtop refrigerated centrifuges generally have dimensions suitable for laboratory benches, typically around 45-50 cm (H) x 80-90 cm (W) x 60-70 cm (D).

Power supply

For the UK market, these units typically require a 230V, 50Hz single-phase electrical supply, though some may be adaptable.

RCF range

Relative Centrifugal Force (RCF) ranges commonly extend up to 10,000 x g or more, depending on the rotor used.

• What are the advantages of a refrigerated centrifuge?

  Refrigerated centrifuges are essential for processing heat-sensitive samples, such as proteins, nucleic acids, and live cells, by maintaining a controlled temperature to prevent degradation during centrifugation.

• What types of rotors are compatible with this model?

• What maintenance is typically required for a refrigerated centrifuge?

• Can this centrifuge be used for clinical diagnostic applications?

• What are the electrical requirements for this type of equipment in the UK?

Centrifuges are valued across laboratories and biotech facilities for reliable sample separation. Buyers typically prioritise rotor compatibility, temperature stability in refrigerated models, and ease of maintenance when purchasing used units. Industry sentiment reflects appreciation for durable construction and consistent performance. Key considerations include verifying motor condition, checking calibration history, and confirming availability of compatible rotors. Well-maintained examples offer strong value and longevity, though wear on seals and bearings warrants inspection. Speed range and capacity alignment with intended applications remains important for operational efficiency.

General overview for this equipment type