Hanna Instruments HI 84100 User Manual

Page 8

FUNCTIONAL DESCRIPTION

FRONT PANEL

REAR PANEL

INSTRUMENT DESCRIPTION

1) Titrant bottle
2) Liquid Crystal Display (LCD)
3) Keypad
4) Electrode holder
5) Peristaltic pump tube

• Place the probe holder on the top of the beaker and

secure by turning clockwise.

• Rinse the ORP electrode with deionized water, open

the refill cap and immerse into the stirring sample
until the teflon reference junction is completely
submerged. Be sure that the tip of the electrode is
not in the path of the stir bar.

• Purge the titrant into a waste beaker for 1-2 seconds

to ensure that the dosing tip is filled with fresh
titrant solution.

• Insert the dosing tip into the titrant tube sleeve. IT

IS CRITICAL THAT THE TIP BE IMMERSED

APPROXIMATELY 1.5 CM INTO THE SOLUTION BEING
TITRATED.

• Fill the 20 mL beaker up to the 5 mL mark with the

HI 84100-52 Acid Reagent, add the contents to
the 50 mL beaker containing the sample.

• Add the contents of one HI 84100-54 Stabilizer

powder packet to the beaker containing the sample.

• Press START STOP to start the titration. The LCD will

display “titr” as well as stirrer and pump tags to

indicate a titration in progress.

• At the end of the titration the sulphur dioxide

concentration is displayed in ppm (mg/L).