16
ELECTRODE MAINTENANCE
PREPARATION
The
HI 4010
fluoride electrode is shipped dry.
The
HI 5313
reference electrode should be main-
tained wet with some storage solution in the protective
cap. Remove the protective cap from the reference
electrode.
Any salt deposit around the electrode tip is normal
and it will dissolve if rinsed with water.
If the junction of the
HI 5313
reference electrode is
dry, soak the tip in
HI 7082
solution for at least one
hour prior to operation.
If the bulb of the
HI 4010
fluoride electrode is dry,
soak the tip in
HI 4010-10
solution (10 ppm fluo-
ride) for at least 3 hours before using it.
for at least 3 hours before using it.
for at least 3 hours before using it.
for at least 3 hours before using it.
for at least 3 hours before using it.
STORAGE
The
HI 4010
fluoride electrode must be stored dry to prolong its life.
After use, rinse it with deionized water, dry it attentively with a non-
abrasive cloth and store it dry.
The
HI 5313
reference electrode should be kept wet for a rapid
response. After use, rinse the electrode with deionized water and store
it with a few drops of
HI 7082
solution in the protective cap.
PERIODIC MAINTENANCE
Periodically check electrodes and cables. The cables should be intact
and show no sign of wear and tear. The electrode bulb and stem
should present no cracks (in which case it, must be replaced). The
connectors must be clean and dry. Rinse the reference electrode with
deionized water to wash away any salt deposits that there might be.
REFERENCE ELECTRODE CLEANING
General
:
immerse the reference electrode in
HI 7061
gen-
eral cleaning solution for about one hour.
Protein
:
immerse the reference electrode in
HI 7073 p
ro-
tein cleaning solution for about 15 minutes.
Oil and fat
: rinse the electrode with
HI 7077
cleaning solution.
HI 5313