Laboratory centrifugation
Centrifuge selection begins with the sample vessel and the force required by the laboratory's method. Tabletop, refrigerated and microcentrifuge descriptions overlap: a refrigerated model can be small-tube or multipurpose, while a benchtop unit can accept several rotors. This range helps buyers compare the actual configuration rather than treating those broad equipment labels as fixed, mutually exclusive specifications.
Useful details for your quote
- All vessel formats, dimensions and current references
- Required RCF and positions per run for each format
- Cooling conditions required by the method
- Rotor, bucket, adapter and lid specifications
- Installation space, power and documentation needs
Work from the vessel outward
List the tubes, plates or column assemblies first. Then identify a supported rotor and the instrument that accepts it. If several formats are needed, ask the quotation to show which rotor and adapter combination serves each one. Maximum instrument capacity may describe a configuration different from the one supplied.
Compare the right operating specifications
RCF and RPM are not interchangeable descriptions. State the force required by the method and ask for the selected rotor's relevant limits. Include temperature requirements separately. A model with cooling should be assessed for its performance under the intended conditions, not selected solely for its lowest stated setpoint.
Balance versatility with daily handling
A multipurpose system may serve several benches, while a dedicated microcentrifuge may suit a recurring small-tube task. Describe normal batches, peaks and the frequency of format changes. Ask about programme storage and handling features that the laboratory will actually use, rather than comparing feature-list length.
Make containment and accessories explicit
The laboratory's risk assessment should define any sealed or containment arrangement required. Request relevant rotor-and-lid documentation and keep those items identifiable in the offer. An outer instrument lid does not establish the same specification as a documented sample-containment accessory.
Prepare the equipment record
Retain the instrument, rotor and adapter references together, with approved vessels and maintenance information. Clarify installation, familiarisation, warranty and servicing terms. This supports later tube purchases and rotor replacement without reducing the equipment's identity to a generic centrifuge description.
Common questions
Do I need a separate centrifuge for every tube size?
Not necessarily. Some models support several approved arrangements. List all formats so the laboratory can compare one multipurpose setup with separate dedicated equipment.
Why can the same centrifuge have several quoted capacities?
Different rotors, buckets and adapters provide different vessel arrangements. Ask which configuration each capacity describes.
Can old rotors be carried over to a new model?
Only where the manufacturer supports the exact combination. Supply the full references and do not infer compatibility from physical resemblance.
How can I compare cooling claims?
Request documentation for the intended rotor and operating conditions, then have the laboratory assess it against the method's temperature requirement.