Bluelab pH Meter - Manual (Page 6)

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5.0 Battery replacement
Batteries are replaced in the Bluelab pH Meter when the low battery
indicator appears on screen.
The low battery indicator remains on and the Bluelab pH Meter continues
to operate until the batteries die or are replaced.
Open battery compartment by sliding
the back cover down and insert 2 x AAA
batteries as shown on the battery holder.
Slide cover back on.
NOTE: Alkaline batteries are recommended.
IMPORTANT: Check the batteries at
least once every six months for signs of
deterioration, rusting or swelling.
If signs of deterioration are found,
clean battery holder contacts and
replace batteries.
4.0 Measuring the pH value
Taking a pH reading
Press the power button to turn the pH meter on.
Remove the storage cap from the pH probe and place the pH probe into the solution.
Wait 1-2 minutes or longer for reading to stabilize to a constant value. The pH
reading is displayed.
If the solution you are measuring is outside the measurement range of the pH meter,
a ‘Ur’ (under range) or ‘Or’ (over range) will be displayed.
Store pH probe between measurements. See section 8.0.
NOTE: If taking readings of more than one solution, rinse the pH probe tip thoroughly
in fresh water between solutions to avoid cross contamination.
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Battery cover