USER'S MANUAL UNIVERSAL CENTRIFUGE CENTRIC 150
Page 7
4.5
CALCULATING MAXIMUM ROTOR SPEED
Each rotor is designed to stand large centrifugal forces. Nevertheless there is large safety
factor for each type of rotor, user must obey following instructions and limits. In other case is self
responsible for possible errors or damage. Security functions and elements build in device are
expected only for normal use.
Maximum speed for each type of rotor is marked on top side of the rotor. Speed is
calculated for examples with maximum density of 1,2 gram / cm
3
. If there is need to centrifuge high
density examples, maximum speed must be reduced by following equitation:
M = (1.2 * n2 / S)1/2
M = Reduced maximum speed
n = Maximum rotor speed for examples with 1,2 g / cm
3
density
S = Example density
4.6
ROTORS AND ACCESSORIES
Rotor RA 12 / 12 Code 455.260
Adapter code (set 12 )
455.259
455.258
Volume ( ml )
15
12
7
5
No positions
6
12
12
12
Dimensions of test tube
D X L ( mm )
16 x 120
Falcon
16 x 100
Vacutainer
12 x 100
12 x 75
Vacutainer
Max. radius ( mm )
100
100
98
85
Max. speed ( min. -1
)
5000 5000 5000 5000
Max. centr. accel. ( g )
2795
2795
2740
2375
Max. kinetic energy
970 Nm
table 1
Rotor RA 8 / 15 Code 455.250
Adapter code (set 12 )
455.259
455.258
Volume ( ml )
15
12
7
5
No
positions
8 8 8 8
Dimensions of test tube
D X L ( mm )
16 x 120
Falcon
16 x 100
Vacutainer
12 x 100
12 x 75
Vacutainer
Max. radius ( mm )
100
100
98
85
Max. speed ( min. -1
)
5000 5000 5000 5000
Max. centr. accel. ( g )
2795
2795
2740
2375
Max. kinetic energy
970 Nm
table 2
