Hanna Instruments HI 98188 - Manual (Page 66)

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PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE PROBE MAINTENANCE
Rinse the probe with clean water after measurements. If more cleaning is
required, remove the probe sleeve and clean the probe with a cloth or a
nonabrasive detergent. Make sure to reinsert the sleeve onto the probe
properly and in the right direction. After cleaning the probe, recalibrate the
instrument.
The platinum rings are sustained with glass. Take great care while handling
the probe.
REPLATINIZATION REPLATINIZATION REPLATINIZATION REPLATINIZATION REPLATINIZATION
The coating of platinum black on the electrodes of the conductivity cell should
be inspected before and after use for signs of flaking or loss of material. If the
coating seems poor, cleaning and replatinization is required.
To perform probe replatinization, enter calibration screen from EC range by
pressing CAL key.
Put the probe into a beaker with replatinization solution and press Start.