Refrigerated High-Speed Microcentrifuge

What is the Refrigerated High-Speed Microcentrifuge?

A refrigerated high-speed microcentrifuge combines up to 21,000 x g with a chamber cooled to 4 C or lower. It is used when RNA, protein or enzyme samples must remain cold during 10 to 30 minute spins, such as in precipitation, extraction and immunoprecipitation.

Overview

This variant pairs the compact rotor of a high-speed microcentrifuge with a small compressor and insulated chamber. Chamber temperature is controlled from -10 to 40 C, with 4 C typically reached in 5 to 10 minutes from ambient and held within plus or minus 2 C at top speed. Rotors hold 24 x 1.5/2.0 mL tubes or 30 x 1.5 mL tubes and often have aerosol-tight locking lids. Interchangeable rotors allow PCR strip and 5 mL tube options. The controller has RCF and rpm entry, stores programs, and typically offers a fast-cool function. Weight is 25 to 40 kg, and the unit needs ventilation clearance for the condenser. It is more expensive than ambient models but enables reliable RNA and protein workflows where temperature control is critical to yield and integrity.

How does it work?

A microcentrifuge spins a small, lightweight rotor directly coupled to a brushless DC motor, reaching top speed in 10 to 30 seconds. Fixed-angle rotors hold tubes at 45 degrees, which shortens the sedimentation path and gives rapid pellet formation on the tube wall. The rotor is made of aluminum or engineering plastics and has a sealed lid option for biosafety. RCF equals 1.118 x 10^-5 times rotor radius in centimeters times rpm squared, and most models let the user enter either value. Short-spin or pulse functions run while a key is held. An imbalance sensor and lid lock stop the motor if the load is uneven or the lid opens. Refrigerated versions add a compact compressor. PCR strip rotors and colored tube adapters handle small sample formats.

What are the key features?

• Chamber controlled from -10 to 40 C with 4 C reached in 5 to 10 minutes
• Holds temperature within plus or minus 2 C at maximum speed
• Interchangeable rotors for 24 x 1.5/2.0 mL, 30 x 1.5 mL and PCR strips
• Fast-cool function pre-chills the rotor before sample loading
• Aerosol-tight locking rotor lid for infectious and hazardous samples

What are the technical specifications?

A typical refrigerated high-speed microcentrifuge configuration offers maximum speed of 14,000–18,000 rpm, maximum RCF of 18,000–21,000 x g, rotor capacity of 24 x 1.5/2.0 mL or 30 x 1.5 mL, temperature range of -10 to 40 °C, temperature accuracy of ±2 °C and pre-cool time to 4 °C of 5–10 min. 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 RNA extraction and precipitation, protein extraction and immunoprecipitation, enzyme assay sample preparation and sensitive cell lysate clarification. Across the wider Microcentrifuges class, laboratories also deploy it for DNA and RNA spin-column purification, PCR tube pulse spins and protein precipitation.

Which standards and certifications apply?

Relevant standards and methods include IEC 61010-1, IEC 61010-2-020, IEC 61326-1, ISO 15189, CLSI MM13 and GB 4793.1. Certification candidates for this model are CE, ISO 9001 manufacturing and RoHS; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Keep the lid clean and free of residue, since dried sample or salts can cause rotor corrosion and imbalance. Wipe the chamber and rotor with 70 percent ethanol or mild detergent, and autoclave rotors only if rated. Tubes should be balanced in opposing positions, with matched volumes and tube types. Inspect the rotor for cracks, pitting or deformation at least every six months and retire it at the stated lifetime. Verify speed and timer annually with a tachometer. Keep aerosol-tight lids closed when handling pathogens. Place the unit on a flat bench away from edges, because vibration can cause walking during unbalanced runs.

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

Choose this variant when spins last over 10 minutes or sample activity depends on staying near 4 C. It is heavier and costlier than the ambient high-speed siblings. In the RFQ, specify rotor options, RCF, temperature range and accuracy, program needs and ambient room temperature.

How does it compare with other Microcentrifuges variants?

Choose by RCF first: spin-column work typically needs 10,000 to 14,000 x g, while RNA and protein precipitation often calls for 12,000 to 21,000 x g. Decide whether refrigeration is necessary; ambient models suffice for DNA spin columns and quick spins, but RNA, enzymes and long spins benefit from 4 C. Rotor capacity matters, with 12, 24 and 30 tube positions common. Look for interchangeable rotors, aerosol-tight lids, PCR strip adapters, programmable timers, and quiet operation below 55 dB(A). For high-throughput settings, consider units accepting 96-well plates or PCR strips. Verify that tubes are rated for the RCF and confirm the unit is compact enough for shared benches and biosafety cabinets.