Hanna Instruments HI 84500 User Manual
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• The instrument will continuously update the concentration on the display. The value will be
displayed blinking. When the reading is under range “
----” symbol appears blinking.
• The titration curve can be visualized during a titration by pressing
Plot ON. Press Plot OFF to
exit this mode.
Note: DO NOT PLACE THE 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.
• Wait for the syringe to refill.
• Place the stir bar in the beaker and put the beaker into the beaker
holder.
• Place the probe holder on the top of the beaker and secure it by
turning clockwise.
• Rinse the ORP electrode with deionized water and immerse into
the sample until the PTFE reference junction is completely
submerged. Be sure that the tip of the electrode is not hitting the
stir bar.
• Insert the dosing tip into the titrant tube sleeve. IT IS CRITICAL
THAT THE TIP BE IMMERSED APPROXIMATELY 0.25 CM (0.1”)
INTO THE SOLUTION BEING TITRATED.
• Press
Continue to begin the titration and Stop to abort it.