Entering The Rcf Value; Concerning The Rcf Value - Kendro SORVALL Biofuge primo Operating Instructions Manual

5. For faster operation, you may shift the flashing
cursor in the speed/RCF and in the run time panels:
just press both and
sor moves by one digit to the left for each key
depression.

Entering the RCF value

You can adjust the RCF setpoint in steps of 1. The
setpoint is entered analogously to the speed.
As long as the rotor has not been identified, it is im-
possible to display RCF values. This is signaled by
dashes ----- in the display.
Shortly after starting the centrifuge run the rotor is
identified, and the current value is displayed.
NOTE:
If you set an extremely low RCF value, this may be
automatically corrected if the resulting speed would be
lower than 300 rpm.
simultaneously. The cur-

Concerning the RCF value

The relative centrifugal force (RCF) is given in multi-
ples of the earth gravity g. It is a dimensionless num-
ber that allows one to compare the efficiency of sepa-
ration or sedimentation of diverse instruments, since it
is independent of the instrument used. The only values
entered in the equation are radius and speed of cen-
trifugation:
2
 n 
= ∗  ∗

RCF 1118 . r
 
1000
r = radius of centrifugation in cm
n = speed in rpm
The maximum RCF value is based on the maximum
radius of the vessel bore.
Please note that this value becomes lower
depending on the tubes and adapters used.
You may take this into account when calculating the
RCF value for your application.
Operation
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