54
IMPORTANT: After performing any of the
cleaning procedures rinse the electrode thor-
oughly with distilled water, drain and refill the
reference chamber with fresh electrolyte, (not
necessary for GEL filled electrodes) and soak
the electrode in HI70300 or HI 80300 Stor-
age Solution for at least 1 hour before taking
measurements.
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 electrolyte
level (in refillable electrodes only): refill
with HI7071 for single junction or HI7082
for double junction electrodes.
• Dry Membrane/Junction: Soak in Stor-
age Solution HI70300 for at least 1 hour.
• Drifting: Soak the electrode tip in warm
Hanna Solution HI7082 for one hour and
rinse tip with distilled water. Refill with
fresh HI7071 for single junction electrodes
and HI7082 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 (replace the elec-
trode if cracks are found).
• Slow Response/Excessive Drift: Soak
the tip in Hanna Solution HI7061 for 30
minutes, rinse thoroughly in distilled water
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