Refrigerated High-Speed Microcentrifuge

What is the Refrigerated High-Speed Microcentrifuge?

A refrigerated high-speed microcentrifuge spins 0.2 to 2.0 mL tubes at up to about 21,000 × g while holding samples at 4 °C or lower. It is the standard bench instrument for nucleic acid and protein sample preparation where temperature-sensitive lysates must be separated quickly.

Overview

Refrigerated microcentrifuges combine a brushless induction motor, a fixed-angle rotor and a compressor-based cooling system in a benchtop cabinet. Rotor speeds reach about 15,000 rpm, giving roughly 21,000 × g for 24-place 1.5/2.0 mL rotors. Interchangeable rotors accommodate PCR strips, 0.5 mL tubes, 5 mL tubes and microplates. The chamber is typically held from −10 to 40 °C with pre-cooling functions. Acceleration and deceleration profiles, typically nine or more, protect delicate pellets. Imbalance detection stops the run, and a lid lock prevents opening while the rotor spins. Aerosol-tight rotor lids are available for infectious material. Noise and vibration are low enough for shared bench use. Rotor options extend the instrument to PCR strips and small plates.

How does it work?

Sample processing instruments apply controlled energy to break down biological structures and then separate the components of interest. Bead mills shake tubes containing ceramic, glass or steel beads at several meters per second so that impact and shear rupture cells and tissue. Ultrasonic disruptors drive a titanium probe at about 20 kHz, and cavitation bubble collapse lyses cells. High-pressure disruptors force suspensions through a narrow valve at 500 to 2,000 bar, generating shear and pressure drop. Centrifuges separate particles by sedimentation in a centrifugal field expressed as relative centrifugal force (RCF), with refrigeration to protect labile molecules. Automated liquid handlers use air-displacement or positive-displacement pipetting channels and deck-mounted labware to transfer, dilute and plate samples reproducibly.

What are the key features?

• Maximum relative centrifugal force of about 21,000 × g for 1.5/2.0 mL tubes.
• Compressor cooling holds the chamber at 4 °C during long runs.
• Interchangeable rotors for PCR strips, microtubes and small plates.
• Nine or more acceleration and braking profiles protect soft pellets.
• Imbalance detection and lid lock for operator safety.
• Aerosol-tight rotor lids available for biosafety work.

What are the technical specifications?

A typical refrigerated high-speed microcentrifuge configuration offers maximum speed of 15,000–16,000 rpm, maximum RCF of up to 21,000 × g, standard rotor capacity of 24 × 1.5/2.0 mL, temperature range of −10 to +40 °C, temperature accuracy of ±1 °C and timer range of 10 s–99 min, plus continuous. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Refrigerated High-Speed Microcentrifuge is used in nucleic acid extraction and precipitation, protein lysate clarification, plasma and serum separation for research and column-based kit protocols. Across the wider Sample Processing class, laboratories also deploy it for tissue homogenization for RNA extraction, bacterial and yeast cell lysis and protein extraction for Western blot.

Which standards and certifications apply?

Relevant standards and methods include IEC 61010-1, IEC 61010-2-020, IEC 61326-1, ISO 8655 and IEC 61010-2-010. Certification candidates for this model are CE, ISO 9001 manufacturing and IEC 61010-2-020 test report; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Place heavy instruments such as centrifuges on a level, vibration-free bench and allow ventilation clearance. Check rotors and buckets for wear, and log run hours against manufacturer limits. Probe sonicators and bead mills need sound enclosures and hearing protection. Calibrate pipetting channels periodically, typically with gravimetric or photometric checks per ISO 8655, and verify centrifuge speed with a tachometer. Clean between samples to avoid carry-over, using nuclease-free consumables for RNA work. Aerosol-generating steps involving infectious material should be performed in a biosafety cabinet or sealed rotors, following local biosafety rules.

How do I select the right Refrigerated High-Speed Microcentrifuge?

Choose a refrigerated microcentrifuge when protocols call for spinning at 4 °C, such as RNA precipitation or protein lysate clarification. Specify maximum RCF, rotor options and tube formats, temperature range and need for aerosol-tight rotors. Non-refrigerated models suit room-temperature kit protocols at lower cost. Also confirm rotor availability and service access.

How does it compare with other Sample Processing variants?

Select by sample type first. Tough or fibrous tissue, plant material and spores need bead beating or rotor-stator shear, while soft tissue and cultured cells can be lysed by sonication or detergent-assisted methods. Consider batch size: bead mills handle 24 to 48 tubes at once, whereas probe sonicators process one sample at a time. Match the instrument to the downstream target, since heat and shear damage RNA and intact proteins, making cooling and pulse control important. For separation, choose rotor capacity and maximum RCF for your tube formats, and confirm refrigeration down to 4 °C or lower. For automation, define the number of deck positions, tip formats and volume range, and confirm that scripting software supports your protocol.