Refrigerated Micro-Ultracentrifuge

What is the Refrigerated Micro-Ultracentrifuge?

A refrigerated micro-ultracentrifuge is a compact benchtop unit spinning 0.2 to 2 mL tubes at up to 100,000 to 150,000 rpm and 500,000 to 1,000,000 x g with temperature control. It is used for fast pelleting of exosomes, membrane vesicles, ribosomes and protein aggregates from small samples.

Overview

The refrigerated micro-ultracentrifuge is intended as a convenient, low-capacity instrument to bridge microcentrifuges and large ultracentrifuges. Its rotors hold 6 to 12 tubes of 0.2 to 2 mL, with thick-walled polycarbonate or polyallomer tubes rated for the extreme RCF. Typical maximum speeds are 100,000 to 150,000 rpm with RCF of 500,000 to 1,000,000 x g. The chamber operates under light vacuum, often reaching 1 to 3 Pa in a minute, and temperature is controlled between 0 and 40 C with a compressor. Acceleration to top speed takes under 2 minutes, and runs of 15 to 60 minutes are common for exosome or protein pellets. A unit weighs 60 to 120 kg and operates from a 220 V outlet. It is often placed in core facilities for quick access by many users, since it avoids the overhead of larger machines.

How does it work?

An ultracentrifuge drives a titanium or carbon fiber rotor through a high-frequency induction or brushless motor, typically with a magnetically suspended or oil-lubricated flexible shaft. The chamber is evacuated below 0.1 Pa (1 micron Hg) by a rotary vane and diffusion or turbomolecular pump, eliminating air friction that would otherwise overheat the rotor. Refrigeration controls rotor temperature via infrared sensing, usually between 0 and 40 C. Particles sediment according to Stokes' law, with sedimentation coefficients measured in Svedberg units, in preparative runs, or are separated by buoyant density in cesium chloride, sucrose or iodixanol gradients in isopycnic runs. Rotors are identified automatically, and the control system tracks run hours and cycles to derate them. A heavy armor ring contains rotor fragments in the event of failure.

What are the key features?

• Compact unit with 6 to 12 tube rotors for 0.2 to 2 mL tubes
• Reaches 100,000 to 150,000 rpm in under 2 minutes
• Light vacuum chamber reaches 1 to 3 Pa within about a minute
• Compressor temperature control from 0 to 40 C
• Runs from a standard 220 V outlet without special installation

What are the technical specifications?

A typical refrigerated micro-ultracentrifuge configuration offers maximum speed of 100,000–150,000 rpm, maximum RCF of 500,000–1,000,000 x g, rotor capacity of 6–12 x 0.2–2 mL, temperature range of 0 to 40 °C, temperature accuracy of ±2 °C and chamber vacuum of 1–3 Pa. 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 Micro-Ultracentrifuge is used in exosome and vesicle pelleting, ribosome and protein complex sedimentation, protein aggregate analysis and nanoparticle sedimentation. Across the wider Ultracentrifuges class, laboratories also deploy it for virus and viral vector purification, exosome and extracellular vesicle isolation and lipoprotein fractionation.

Which standards and certifications apply?

Relevant standards and methods include IEC 61010-1, IEC 61010-2-020, IEC 61326-1, ISO 9001, EN 12469 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.

Floor-standing units weigh 200 to 450 kg and often require a dedicated 220 V or 380 V circuit and a level, vibration-free floor. Rotor management is critical: log every run, derate titanium and aluminum rotors per the maker's schedule, and retire rotors at the stated lifetime. Use only tubes and adapters certified for the rotor, and fill them as specified. Vacuum pumps need periodic oil changes, and seals require inspection. Clean rotors with neutral detergent and never use chloride or strong alkali on aluminum. Annual preventive maintenance should include speed, temperature and vacuum checks. Install and operate in line with IEC 61010-2-020 and local pressure-vessel and biosafety rules.

How do I select the right Refrigerated Micro-Ultracentrifuge?

Choose this variant for core facilities or labs with small volumes up to about 20 mL per run, needing fast access without a large ultracentrifuge. It has lower capacity than floor-standing siblings and fewer rotor options. In the RFQ, specify rotor count and tube sizes, temperature range and power supply.

How does it compare with other Ultracentrifuges variants?

Specify the maximum RCF needed: 100,000 to 150,000 x g suits most gradient and pelleting work, while ribosomes, small viruses and proteins need 300,000 to 600,000 x g or analytical capability. Choose rotor geometry to match the task, with swing-bucket rotors for gradients, fixed-angle rotors for pelleting, vertical or near-vertical rotors for fast gradients and zonal or continuous-flow rotors for large volumes. Consider tube materials and sealing, because ultracentrifuge tubes require heat-sealed or cap-assembled closures. Evaluate run documentation, rotor life tracking, temperature range, vacuum time, noise, and installation needs including weight, power and cooling water. For multi-user facilities, autoclavable rotors and biosafety containment options matter.