User Guide

20
TROUBLESHOOTING
Evaluate your electrode performance based
on the following.
• Noise (Readings fluctuate up and down)
could be due to:
- Clogged/Dirty Junction: Refer to the
Cleaning Procedure above.
- Loss of shielding due to low electro-
lyte level (in refillable electrodes only):
HI7071 or HI 8071 for single junction or
HI7082 or HI8082 for double junction
electrodes.
• Dry Membrane/Junction: Soak in Stor-
age Solution HI70300 or HI80300 for at
least 1 hour.
• Drifting: Soak the electrode tip in warm
Hanna Solution HI7082 or HI 8082 for
one hour and rinse the tip with distilled
water. Refill with fresh HI7071 or HI8071
for single junction electrodes and HI7082
or HI8082 for double junction electrodes.
• Low Slope: Refer to the cleaning proce-
dure above.
• No Slope: Check the electrode for cracks
in glass stem or bulb and replace the
electrode.
• Slow Response/Excessive Drift: Soak
the tip in Hanna Solution HI7061 or
HI8061 for 30 minutes, rinse thoroughly
in distilled water and then follow the
Cleaning Procedure above.