6 Stirring operation
Thermo Scientific
18
50134805_03.2012
6.3
Recommended rotation speed ranges
We recommend the following rotation speed ranges for various applications:
6.4
Stirring
DANGER!
Magnetism.
Magnetic or metallic parts (e.g. data carriers, pacemakers, watches...)
can be affected by magnetic fields.
Keep such parts away from the magnetic stirrer (5) and the stirring
device (1).
DANGER
GLASS SPLINTER.
At high speeds of the mixing stick can lead to the destruction of the
sample vessels.
Wear safety goggles!
The vortex should not reach the stirring bar.
The stirring bar must rotate in the center of the sample vessel.
Watch the rotational behavior of the mixing stick for slow starts
CAUTION
High speed rotations of the stirring bar can cause a warming of the
goods.
CAUTION
High speed rotations of the stirring bar can cause a warming of the
goods.
Application
Speed range (rpm)
Microbiological and biotechnical applications:
Aeration of bacteria cultures
Growth of bacteria cultures
Dissolving nutrient mediums, intense aeration of
bacteria cultures
200 - 350
300 - 450
350 - 500
Routine laboratory work:
Prevent accretion of suspended matter
Titration
Dissolving solids
Improved heat transmission
Chemical reactions
150 - 250
250 - 400
350 - 700
300 - 600
100 - 1000
