Image of a PRP tube

Rotor Measure

Users Manual Specification

All centrifuges come with instruction manuals. Go to the specification section of the centrifuge manual which will have the radius or diameter (divide the diameter by 2 for the radius of rotation) Use this number in centimeters in the calculator below to determine the RPM’s needed.

Measuring the radius:

Swinging bucket rotor (Fig.A) - Undo the center bolt on the rotor and remove it from the centrifuge. Then extend the swinging bucket parallel (or to the position the bucket is in during centrifugation) and measure from the center of the rotor to the outer most end of the bucket. Use this measurement in centimeters to insert into the calculator below to determine the RPM’s needed.

Diagram of how to measure the radius of a swinging bucket centrifuge

Fixed angle rotor (Fib. B) - Undo the center bolt on the rotor and remove it from the centrifuge. Take a straight edge and hold it perpendicular to the end of the fixed bucket. Then measure from the center of the rotor to the straight edge. Use this measurement in centimeters to insert into the calculator below to determine the RPM’s needed.

Diagram of how to measure the radius of a fixed bucket centrifuge

Centrifuge Speed Calculator

In order to calculate the RPM’s needed for your centrifuge please enter the radius of the rotor and enter the centimeters below.