Specifications

Setting the Stirring Speed
The 12” x 12” top plate will accommodate up
to four 1 liter vessels, one at each stirring
position. The 4-place MIRAK will also stir two
2 liter flasks simultaneously with up to two 1
liter flasks, one at each of the other two stir-
ring positions. Actual stirring speed may differ
between larger vessels and smaller vessels
stirred simultaneously, depending on the
amount and the viscosity of the solution in
each flask.
Your MIRAK 4-place stirrer or stirring hot
plate has an electronic feedback speed con-
trol which will maintain a precise speed set-
point from 60 rpm to 1200 rpm with accuracy
of ±2 rpm. Maximum speed at each position
is dependent on viscosity of the solution
and/or the amount of solution in each vessel.
The MIRAK stirrers and stirring hot plates are
equipped with a strong magnet and high
torque motor which will draw a vortex in up to
1800 ml of water stirred in a 2 liter flask with
a new 2” stir bar.
To set the speed, spin the SPEED CONTROL
knob until your desired setting is indicated on
the digital display. As you move the knob, the
SET light next to the RPM display will illumi-
nate. Turn the knob clockwise to increase the
speed or counterclockwise to decrease the
speed. The unit will not start to stir until you
press the speed control knob. Once the unit
begins stirring, the display will register ACTU-
AL speed and the SET light will no longer be
illuminated. To check your setpoint, move the
knob counterclockwise one position. You will
feel a click, the SET light will illuminate and
your setpoint will be displayed again for five
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OPERATION