Thermo Products REDOX/ORP 9678BNWP - Manual (Page 16)

 Redox/ORP Electrode User Guide
Electrode Maintenance
1. Inspect the electrode for scratches, cracks, salt crystal
buildup, or membrane/junction deposits.
2. Rinse off any salt buildup with distilled water. Remove any
membrane/junction deposits as directed in the General
Cleaning section.
3. If the electrode is refillable, drain the reference chamber,
flush it with fresh filling solution and refill the chamber with
fresh filling solution.
4. If the electrode is refillable, make sure that the filling
solution does not crystallize or dry out. Remove any
crystals by rinsing the electrode with distilled water
or wiping with a damp, lint-free tissue. To prevent
crystallization of the filling solution, cover the fill hole
whenever the electrode is being stored and open the fill
hole when calibrating and measuring.