Multifors 2 - Parallel Bench-top Bioreactor
Technical Data
28 March 2018
Page
33
of
211
Impellers
Number/Type and Material
Vessel
2 blade impellers, 6 blades
316L, electro polished Ra = 0.8 µm
400 mL
2 Rushton impellers, 6 blades
Peek
750 mL and 1400 mL
Vessel
A
B
C
400 mL
24 mm
6.5 mm
4.8 mm
750 mL
30 mm
8.0 mm
8 mm
1400 mL
38 mm
9.0 mm
11 mm
The figure to the left shows the Rushton impeller.
3.5.4 Stirrer Drive System Cell Culture Version
Description
Value
Drive
Magnetic
Motor
Type: Stepper motor
Nominal power: 8.3 W
1
Nominal torque: 100 mNm
1
Range of rotation
speed with 2 impel-
lers
2
All vessel sizes:
30 up to 300 min
-1
Accuracy
Measurement
:
± 5 min
-1
Control:
≤ ± 5 min
-1
Direction of rotation
Counter clockwise (top view vessel)
Bearing housing mate-
rial
Ceramic
1
)
At max. rotation speed
2
)
With water at 30 °C, and 0.5 vvm air flow sparger
