7
Refillable Ag/AgCl pH Electrode User Guide
Electrode Preparation for Sure-Flow
®
Models
1. Remove the protective shipping cap from the sensing
element and save the cap for storage.
2. Clean any salt deposits from the exterior of the electrode by
rinsing with distilled water.
3. Uncover the filling hole by removing the tape and then add
electrode filling solution, Cat. No. 900011, to the electrode.
To maintain an adequate flow rate, the level of filling
solution must always be above the reference junction and
at least one inch above the sample level. The filling hole
should be open whenever the electrode is in use.
4. Wet the junction by pressing down on the electrode cap
to let a few drops of the filling solution flow out of the
electrode and then replenish any lost solution.
5. Shake the electrode downward (similar to a clinical
thermometer) to remove air bubbles.
6. Soak electrode in pH electrode storage solution, Cat. No.
910001, for 30 to 60 minutes.
7. Connect the electrode to the meter.
filling hole
Ag/AgCl
internal
reference
filling
solution
chamber
ceramic
reference
junction
pH
sensing
bulb
fill hole
AgAgCl
internal
reference
reference
filling solution
chamber
Sure-Flow
junction
pH
sensing bulb
Sure-Flow Refillable Ag/AgCl Combination pH Electrode
Summary of Contents for 9101BN
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