29
TITRATION PROCEDURE
• For best accuracy, before taking any measurement, ensure that the pump is calibrated on the
selected range following the “Pump Calibration Procedure” (see page 27).
Note:
Verify that the instrument has been calibrated (pH and pump) before performing any
titrations.
• Refer to “Setup Menu” (see page 12) to set up the instrument for your measurement.
• Select the corresponding measurement range.
• Ensure the pump is primed with the correct titrant for the selected range (
HI 84532-50
Low
Range Titrant or
HI 84532-51
High Range Titrant).
S
ample preparation
: Using a clean pipette to precisely add the appropriate amount of sample
to a clean beaker as indicated below:
Note:
Failure to use a clean pipette will result in erroneous
readings.
• Put the sample in the 50 mL beaker. Fill the beaker up to
50 mL with deionized water.
• Press
Titrator
.
Note: DO NOT PLACE THE DISPENSING TIP INTO THE
SAMPLE BEAKER. PLACE THE TIP OVER A WASTE
BEAKER. A SMALL AMOUNT OF TITRANT IS
DISPENSED WHEN THE PUMP RESETS.
• Press
Start
to begin a titration.
• Place the stir bar in the beaker and put the beaker in the
minititrator top.
• Place the probe holder on the top of the beaker and secure it
by turning clockwise.
Low Range (5 ml)
High Range (5 ml)
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1
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