BioLT

Worked Example

RCF to RPM Conversion Example for a New Rotor

Worked example for converting a published spin force into the RPM needed on a centrifuge with a different rotor radius.

Scenario

A paper reports spin conditions in RCF, but your centrifuge display is RPM and your rotor radius is different.

This example shows how to adapt the condition without copying a number that belongs to another machine.

Inputs to confirm

Target RCF from the protocol.

Actual rotor radius for your rotor, not a generic manufacturer estimate from a different model.

Whether the protocol is sensitive to under-spinning or overheating.

Why this matters

Published RPM values are not transferable across different rotors.

A worked example makes the protocol adaptation step explicit and gives the page more practical value than a formula alone.

Common failure points

Copying RPM from a paper that used another rotor.

Using the wrong measurement point for rotor radius.

Ignoring whether a long spin at higher RPM could heat the sample.