User Guide

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As these are Auto-Speed stirrers with auto-
matic feedback control, they are ideal for non-
Newtonian fluids whose viscosities change
during stirring or Newtonian fluids up to 5 litres
capacity.
OPERATIONOPERATION
OPERATIONOPERATION
OPERATION
1. Make sure that the SPEED knob (B) and
the ON/OFF switch (L) are in the OFF
positions.
2. Place a beaker or glass container on top of
the stirrer and place the stirring bar at the
centre of the beaker base.
3. Pour the liquids to be mixed into the beaker.
Do not fill the brim and leave sufficient
space to prevent spillage during stirring.
4. Connect power cable and switch on the
power supply. Then the stirrer on with the
ON/OFF switch.
5. Set the TIME knob (F) to the desired
stirring time from 5 min. to 2 hours. Then set
the START/RESET (G) switch to START.
The stirrer will only start stirring when the
START switch is depressed.
6. Adjust the SPEED knob slowly until the
required stirring speed is achieved. Allow
USEUSE
USEUSE
USE
HI 322N
HI 324N
APPLICATIONSAPPLICATIONS
APPLICATIONSAPPLICATIONS
APPLICATIONS
1. Routine stirring appli-
cation with a predeter-
mined stirring time
2. Repetitive stirring in
multiple batches with
the same stirring
speed and predeter-
mined stirring time.
istrstirR2.p65
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sufficient time for the mixing operation to
attain uniform rotational flow. The stirring is
indicated in the rpm LCD (D) for models HI
324N. If you need to restart the timer, press
START/RESET switch to RESET. This will
only reset the timer. Then press the switch
to START to begin stirring again.
7. The stirrer will automatically stop when the
preset time is reached. Turn the SPEED
knob to off. If no further stirring is required
switch off the stirrer and disconnect the
power supply.
STIRRERS WITH INCORPORATEDSTIRRERS WITH INCORPORATED
STIRRERS WITH INCORPORATEDSTIRRERS WITH INCORPORATED
STIRRERS WITH INCORPORATED
pH METERpH METER
pH METERpH METER
pH METER
Model: HI 305N normal stirrer
and HI 315N Auto-Speed stirrer
These unique stirrers incorporate a temperature
compensated pH meter into the housing of the
stirrer and allow you to take pH and temperature
measurements while thoroughly mixing the
samples. They are indispensable for accurate
potentiometric titrations where reliable and re-
producible results are required.
Fig. 6