Bluelab Combo Meter - Manual (Page 9)

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9
8.0 Cleaning the Bluelab pH Probe
To ensure accurate readings the pH probe tip needs to be rinsed in water after
each use and cleaned prior to calibration using the following instructions.
The storage cap must always be put back on after cleaning. Always ensure it
contains enough Bluelab pH Probe KCl Storage Solution to cover the probe tip.
Remove storage cap from pH probe.
Hold the top of the storage cap, twist the
cap to loosen then remove.
Rinse pH probe tip under fresh tap
water.
Never use RO (Reverse Osmosis), Distilled
or De-ionized water.
Fill a small plastic container with clean
tap water.
Add a small amount of Bluelab pH Probe
Cleaner or mild detergent (dishwashing
liquid).
Gently stir the probe tip in the mixture.
Ensure that you do not ‘knock’ the soil pH
probe on the side of the container as this
may cause damage to the probe.
Rinse well under fresh running water
to remove all traces of the detergent
mixture.
If the probe tip requires removal of
heavy contamination:
Gently brush around the glassware with a
few drops of Bluelab pH Probe Cleaner or
mild detergent (dishwashing liquid) and a
soft toothbrush.
Rinse well under fresh running tap
water to remove all traces of the
detergent mixture.
Calibrate pH probe after cleaning, see
section 3.0
After calibration, store pH probe in the
storage cap, ensuring there is enough KCl
Storage Solution to cover the probe tip.
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