2026-06-15
Most lab technicians set centrifuges by RPM. But RPM is meaningless without rotor radius.
The real metric? Relative Centrifugal Force (RCF or g-force) – the actual force applied to your sample.
🔁 The simple rule:
Same RPM + smaller rotor = lower g-force = incomplete pelleting
Same RPM + larger rotor = higher g-force = potential cell damage
📐 Quick formula:
RCF = 1.118 * 10⁻⁵ * r * (RPM)²
(*r* = rotor radius in cm)
✅ Best practice: Always validate protocols by RCF, not RPM. When replicating a published method, match the g-force – not the speed.
Many failed experiments trace back to this single oversight. Don't let yours be one of them.
