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Please set up the instrument before performing the pump calibration.
The calibration of the pump must be performed each time the pump tube, the reagent bottle or
the pH electrode is changed. It is recommended to perform the pump calibration before each set
of titrations.
Verify:
The electrode has been calibrated in 8.20 pH buffer.
•
Sample preparation:
Precisely measure 2 mL of
HI 84432-55
Pump Calibration Solution
and add it to a clean beaker.
Fill the beaker up to the 50 mL mark with the distilled or
deionized water.
• Place the stir bar into the beaker and then place the beaker in the
appropriate place on the instrument top.
• Place the electrode holder on the top of the beaker and secure
it by turning clockwise.
• Immerse the calibrated pH and the temperature electrodes
approximatively 2 cm (0.8”) into the standard paying attention
not to touch the stir bar.
• Insert the dosing tip in the appropriate holder place. Immerse
the tip into solution.
• Carefully insert the dosing tip into the dedicated guide tube.
Note:
The chemical reagents may be hazardous if improperly
handled. Read Health and Safety Data Sheets before
performing the test.
After the 5 minutes purging interval has elapsed the
“Completed”
message is displayed. Another
purge period can be initiated by pressing
Restart
or press
Esc
to return to main titrator screen.
PUMP CALIBRATION PROCEDURE
