13
•
Be sure the sponge inside the electrode cap is hy-
drated at all times with pH buffer buffer solutions.
•
White KCl crystals may be present in the cap. These
crystals will dissolve while the sensor is soaked or they
can be simply rinsed off with tap water
•
If the unit appears to be locked (display frozen) it is
possible that the meter is in
Hold
mode (see p. 12)
Simply press the
MODE/HOLD
button again or turn the
meter off and restart if the display appears frozen. If
this fails to revive the, meter, remove the batteries,
push the ON button for 3 seconds and then reinsert the
batteries.
•
If the meter has difficulty calibrating or maintaining a
stable reading, the sensor may need to be replaced.
•
Accuracy will be improved if the standard solution is
at the same temperature as that of sample being
measured.
Meter Handling/
Troubleshooting