Releasing A Held Reading; Electrode Care And Maintenance - LaMotte pHPLUS DIRECT 2 Manual

4.4 Releasing a Held Reading

Press the HOLD key once again to deactivate the HOLD function
or to release the frozen reading. The meter will revert to the current
measurement mode, and the "HO" annunciator will disappear from the
DISPLAY.

5. ELECTRODE CARE AND MAINTENANCE

For best results, store the ISE dry and the pH/ORP probe bulb wet.
Store the pH/ORP glass bulb in pH probe storage solution. NEVER use
deionized water for storage. Wash probes with clean water after each use.
ISEs and pH probes are susceptible to contamination and dirt. Clean
them as needed using mild detergent and warm water. Blot the probe
gently with soft tissue paper to dry. Avoid excessive rubbing of the
glass membrane and avoid touching it with the fi ngers. Recalibrate after
cleaning.
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