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CONDITIONING
Remove the cap and immerse the pH54
in MA9015 storage solution for 2 hours to
activate the electrode.
CALIBRATION
Unscrew the battery compartment cap on
the top of the meter and perform one of the
following two-point calibration procedure,
according to the required application:
Acid calibration for measurements below
pH7:
Immerse the electrode in pH7.01 (M10007)
buffer solution.
Allow the reading to stabilize and with a
small screwdriver turn the "7" calibration
trimmer inside the battery compartment
until the display shows "7.01".
Rinse the electrode with tap water and
immerse it in pH4.01 (M10004) buffer
solution.
Allow the reading to stabilize and with a
small screwdriver turn the "4" calibration
trimmer until the display shows "4.01".
Alkaline calibration for measurements
above pH7:
Immerse the electrode in pH7.01 (M10007)
buffer solution.
Allow the reading to stabilize and with a
small screwdriver turn the "7" calibration
trimmer until the display shows "7.01".
Rinse the electrode with tap water and
immerse it in pH10.01 (M10010) buffer
solution.
Allow the reading to stabilize and with a
small screwdriver turn the "4" calibration
trimmer until the display shows "10.01".
Replace the battery compartment cap.
OPERATION
Remove the protective cap.
Turn the pH54 on by pressing the ON key.
Immerse the electrode in the solution to be
tested.
Stir gently and wait for the reading to
stabilize.
After use, rinse the electrode with water to
minimize contamination.
Store the electrode with a few drops
of storage (MA9015) or pH7 (M10007)
solution in the protective cap.
Always replace the protective cap after use.
Never use distilled or deionized water for
storage purposes.
ELECTRODE REPLACEMENT
The electrode can be easily replaced in the
following way:
Remove the protective cap.
Unscrew the plastic ring on the top of the
electrode.
Pull out the MA73600 pH electrode and
replace it with a new one (aligning the
colored pin towards the LCD side).
Make sure the gaskets are in place before
screwing back the ring.
BATTERY REPLACEMENT
The pH54 is going to turn off when the batteries
are to weak. To replace the batteries unscrew
the battery compartment cap and replace all
three 1.5V batteries while paying attention to
their polarity. Make sure the gasket is in place
before screwing back the cap.
Batteries should only be replaced in a
nonhazardous area using the battery type
specified in this instruction manual.
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