Full Product Manual

8
8. Whencompleted,thepHmeterwilldisplay"End"forseveralseconds
and will then resume normal operation.
9. Repeat steps 3 through 8 for the pH 4.00 and pH 10.00 buffer solutions.
Note: Always rinse the electrode with distilled water to remove any
residualbuffersolutionbeforenextcalibration.
Replacing the Electrode
pH Electrodes have a nite lifespan due to inherent properties and is
dependent on frequency of use and care. Proper maintenance of your pH
meteristhebestwaytomaximizethelifeofyourpHelectrode.Whenthe
reading becomes unstable or sluggish it may be time to replace your
electrode. If you can no longer calibrate the electrode, it is time to replace it.
Follow the steps below to replace the electrode:
1. Remove the electrode protective cap.
2. Unscrewtheelectrodecollarclockwise,andremoveitcompletely.
3. Pull the pH electrode module out.
4. Carefullypluganewelectrodemodule(R3500-ELECTRODE)into
the socket.
5. Tighten the electrode collar to ensure a good seal and replace the cap.
Battery Replacement
WhenthelowbatteryiconappearsontheLCD,thebatteriesmust
be replaced.
1. Twist off the battery compartment cap.
2. Replacethefour(4)LR441.5Vbuttoncellbatteries.
3. Replace the battery compartment cap.
REED Instruments
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