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6.1 Cap and Electrolyte Replacement
The pre-assembled cap should be replaced when the probe cannot be
calibrated or the membrane is damaged. Typical membrane damages are
punctures or wrinkles caused during measurements or cleaning.
For replacement parts, see Section 11 –
Replacements And Accessories
.
1. Turn the cap counter clockwise to unscrew it from the probe
sensing tip.
2. Rinse the probe under running water.
3. Mount the nozzle tip onto the syringe provided. Fill the syringe
with the ref ll solution through the tip of the plastic bottle.
4. Hold the probe upside down. Insert the nozzle tip into one of the
4 holes surrounding the silver cathode. Inject the f ll solution
into the probe body until solution leaks out from the f ll hole
(approximately 5 mL).
5. Replace the pre-assembled cap on the probe. Turn the cap
clockwise until it is hand tighten.
6. Allow at least 1 hour for the electrode to equilibrate before
usage.
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