Laboratory centrifuges: how can sample phases be separated efficiently?

Indispensable for phase separation, centrifuges turn density differences into cleanly separated fractions of your samples. From microcentrifuges for 0.2–2 mL tubes to versatile benchtop models and high-capacity floor-standing instruments, they combine speed (RCF rather than RPM), precise rotors and safety (lid lock, imbalance detection). With refrigeration for sensitive biomolecules, adapters, buckets and sealing lids, you gain in reproducibility, throughput and peace of mind. Acceleration/braking profiles, low noise and digital monitoring complete the experience.

What are the different types of centrifuges and the rotors they use?

Depending on your sample matrix and volumes, choose between microcentrifuge (quick spins, nucleic acids, proteins), benchtop centrifuge (15–50 mL tubes, microplates, bottles) and floor-standing centrifuge (high capacity, core facilities, blood banks).

Key selection criteria: Max RCF (× g) rather than RPM alone, capacity (number of positions/volume per position), temperature control (refrigerated for enzymes, cells, lipids), tube type — diameter and length.

Quick comparison:

Type	Principle	Applications
Microcentrifuge	Rotors fixed-angle, high RCF on small volumes	DNA/RNA minipreps, clean-ups, spin columns
Benchtop centrifuge	Fixed-angle or swing-out rotors, refrigerated options	15–50 mL tubes, microplates, routine separations
Floor-standing centrifuge	High capacity, large buckets/bottles	Large volumes, blood banks

Useful accessories: aerosol-tight lids, swing-out buckets, multi-format adapters, rotors, dedicated furniture. Check compatibility between rotor, adapter and consumable to ensure safety and performance.

In which fields and applications are laboratory centrifuges used?

• Life sciences
• Pharma/biotech
• Clinical/healthcare
• Food & beverage/cosmetics
• Environment/chemistry
• Academia/R&D

Available subcategories for centrifuges and accessories

Frequently asked questions about laboratory centrifuges

What’s the difference between RPM and RCF?
RCF (×g) reflects the actual force applied and depends on the rotor radius. For a given protocol, set the centrifuge by RCF rather than RPM to ensure reliable reproducibility.

When should you choose a refrigerated model?
Whenever your analytes are temperature-sensitive (enzymes, protein complexes, lipids) or for long runs/high RCF. Refrigeration minimises heat build-up from air friction.

Which safety features are essential?
Lid lock, detection of imbalance, aerosol-tight rotors/lids, self-diagnostics and thermal protection safeguard both operator and samples.

Maintenance and service life: what to plan for?
Gentle cleaning, inspection of rotors, lubricating seals, systematic balancing. Favour models with available spare parts and scheduled recalibrations.