Calculation Of Centrifugal Force; Calculation Of Maximum Permitted Rotor Speed - Omni revvity CF-220 User Manual

7. APPENDIX

7.1 CALCULATION OF CENTRIFUGAL FORCE

For the calculation of the centrifugal force (RCF), stated as a multiple of the gravitation-
al force "g", use the following formula:
RCF = 11.18 x r x ( n / 1000 )2
RCF ...........Relative centrifugal force ( x g)
r .................Radius of the rotor (cm)
n ................Rotational speed (RPM)
7.2 CALCULATION OF MAXIMUM PERMITTED
ROTOR SPEED
Users are responsible and must consider the limitations for maximum permitted rotor
speed and about correct rotor load.
The maximum permitted speed for each type of rotor is marked on each rotor. It is
defined for the use of samples with maximum density of 1.2 g/cm3.
If you need to use higher density samples, maximum permitted rotor speed must be
reduced according to the following formula:
M = ( 1.2 x n2/ S )½
M Reduced maximum permitted rotor speed
n Maximum permitted rotor speed for samples with density of 1.2 g/cm3
S Density of used sample
7.3 EQUIPMENT DECONTAMINATION
If infectious materials get into the centrifugal chamber, on the rotors or accessories,
they must be appropriately decontaminated. They may only be decontaminated by
hand with soft cloth and liquids, which contain the following ingredients: ethanol,
n-propanol, ethyl hexanol. After using disinfectants, remove the disinfectant residue
by wiping it with a damp cloth. The surfaces must be dried immediately after disinfect-
ing.
You must perform the decontamination before the device is shipped to the service
and before it is sent to disassembly after the end of the life cycle.