Thermo Scientific Medifuge Centrifuge
23
2�
Press the SPEED arrow keys� This changes the set centrifugation speed�
RPM will change in steps of 100 rpm� RCF will change in steps of 100 x g� Keeping a SPEED
arrow key pressed will change the speed until the limiting values are reached�
The centrifuge automatically saves the chosen value after 5 seconds or when you change
other settings�
Explanation of RCF-Value
The relative centrifugal force (RCF) is given as a multiple of the force of gravity g� It is
a unitless numerical value which is used to compare the separation or sedimentation
capacity of various centrifuges, since it is independent of the type of device� Only the
centrifuging radius and the speed are used for calculation:
RCF = 11�18 x
x r
r = centrifuging radius in cm
n = rotational speed in rpm
The maximum RCF value is related to the maximum radius of the tube opening�
Remember that this value is reduced depending on the tubes and buckets used�
This can be accounted for in the calculation above if required�