To convert maximum relative centrifugal
force (RCF) to RPM: Determine centrifuge 's radius of rotation
(in mm) by measuring distance from center of centrifuge spindle
to bottom of device when inserted into rotor. Lay a ruler or draw
a line from radius value in right-hand column value that corresponds
to the device 's maximum rated g-force. Then read the maximum
value from column at left.