4 Function
50134805_03.2012
11
Thermo Scientific
4 Function
You can use the magnetic stirring systems BIOSYSTEM DIRECT and BIOSYSTEM to
stir liquids in one or several vessels simultaneously. They are used specifically with
respect to the following cultures and suspensions for gentle stirring in the laboratory
and in a production scale environment without damaging the cells:
cell suspensions,
tissue cultures,
microcarrier cultures,
culture baths.
You can stir the liquids in all commercially available culture flasks or bioreactors. As a
stirring device (1) you can use suspension-type stirring magnets, agitator blades,
paddles etc. capable of being moved by magnetic poles. Rotation speed control meets
the requirements of biotechnology and will always start slowly and stir without jerking.
When the stirrer is switched off, the rotation speed is slowly reduced to zero.
The stirring vessel (2) contains a suitable stirring device (1). When the stirring vessel (2)
is placed on the stirring point, a rotating magnetic field will move the stirring device (1).
Remote-controlled BIOSYSTEM :
The rotation speed is adjusted using the rotation speed control button (17) and
displayed on the rotation speed indicator (10).
You may choose between continuous stirring and interval operation. For interval
operation, set the required stirring and pause times on the control unit (9). The rotation
speed is reduced slowly at the end of every stirring period, and increased slowly at the
end of every pause. You can use the rotation direction key (15) to maintain or reverse
the direction of rotation after every pause.
Use the stirring power control button (16) to match the stirring power to the stirring task
in hand. This will keep the heat emitted to the stirred medium to a minimum. Heat
emission can also be reduced by working in the interval mode.
To stop and restart the stirring device (1), the control unit (9) is fitted with a start/stop
key (13). The rotation speed is slowly reduced, and then slowly increased again.
