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ELECTRODE REPLACEMENT
• Remove the protective cap and unscrew the
plastic ring on the top of the electrode.
• Pull out the MI56P electrode and replace it
with a new one.
• Make sure the gaskets are in place before
screwing back the ring.
BATTERY REPLACEMENT
When the batteries become weak, the battery
symbol on the LCD will light up to advise that
only a few hours of working time is remaining.
The meter is also provided with BEPS (Battery
Error Prevention System), which avoids any
erroneous readings due to low battery level by
automatically switching the meter off.
It is recommended to replace the batteries im-
mediately.
To replace the batteries unscrew the battery
compartment cap and replace all four 1.5V bat-
teries while paying attention to their polarity.
Make sure the gasket is in place before screw-
ing back the cap.
Batteries should only be replaced in a non-
hazardous area using the battery type specified
in this instruction manual.
SPECIFICATIONS
RANGE -2.0 to 16.0 pH (pH 55)
-2.00 to 16.00 pH (pH 56)
-5.0 to 60.0°C / 23.0 to 140.0°F
RESOLUTION 0.1 pH (pH 55)
0.01 pH (pH 56)
0.1°C / 0.1°F
ACCURACY (@25°C) ±0.1 pH (pH 55)
±0.05 pH (pH 56)
±0.5°C / ±1°F
TYPICAL EMC DEVIATION ±0.1 pH (pH 55)
±0.02 pH (pH 56)
±0.3°C / ±0.6°F
TEMPERATURE COMPENSATION
Automatic, from -5 to 60°C
CALIBRATION Automatic, 1 or 2 points
with 2 sets of memorized buffers
(pH 4.01, 7.01, 10.01 or 4.01, 6.86, 9.18)
PROBE Replaceable MI 56P
ENVIRONMENT -5 to 50°C; 100% RH max.
BATTERY TYPE 4 x 1.5V; IEC LR44, A76
BATTERY LIFE approx. 300 hours of use
AUTO-OFF after 8 minutes of non-use
DIMENSIONS 200 x dia 38 mm
WEIGHT 100 g
ACCESSORIES
MI 56P Replaceable electrode for pH 55 &
pH 56
M10004B pH 4.01 buffer, 20 ml sachet, 25 pcs.
M10007B pH 7.01 buffer, 20 ml sachet, 25 pcs.
M10010B pH 10.01 buffer, 20 ml sachet, 25
pcs.
MA9004 pH 4.01 buffer, 230 ml bottle
MA9006 pH 6.86 buffer, 230 ml bottle
MA9007 pH 7.01 buffer, 230 ml bottle
MA9009 pH 9.18 buffer, 230 ml bottle
MA9010 pH 10.01 buffer, 230 ml bottle
MA9015 Electrode storage solution, 230 ml
MA9016 Electrode cleaning solution, 230 ml
M10000B Electrode rinse solution, 20 ml sa-
chet, 25 pcs.
• To quit the procedure and return to the last
calibration data, after entering the calibration
mode press the ON/OFF button.
The secondary LCD displays “ESC” for 1
second and then the meter returns to the
normal measurement mode.
• To reset to the default values and clear a
previous calibration, press the SET/HOLD
button after entering the calibration mode and
before the first point is accepted.
The secondary LCD displays “CLR” for 1
second, the meter resets to the default cali-
bration and the CAL tag on the LCD turns off.
SETUP
Setup mode allows the selection of temperature
(°C or °F) and pH buffer set for calibration.
To enter the Setup mode, press the ON/OFF
button until “CAL” on the secondary LCD is
replaced by “TEMP” and the current tempera-
ture unit (e.g. TEMP °C). Then:
• for °C/°F selection: use the SET/HOLD but-
ton; then press the ON/OFF button once to
enter the buffer set selection or twice to return
to the normal measurement mode.
• to change the calibration buffer set: after
setting the temperature unit, press ON/OFF
once and select the buffer set (“pH 7.01
BUFF” or “pH 6.86 BUFF” for NIST) by
using the SET/HOLD button. Press ON/OFF
to return to the normal measurement mode.
WARRANTY
This instrument is warranted against defects in mate-
rials and manufacturing for a period of two years
from the date of purchase. Probe is warranted for 6
months.
If during this period the repair or replacement of parts
is required, where the damage is not due to negli-
gence or erroneous operation by the user, please
return the parts to either distributor or our office and
the repair will be done free of charge.
Damages due to accidents, misuse, tampering or
lack of prescribed maintenance are not covered.
Milwaukee/Martini instruments reserves the right to make
improvements in design, construction and appearance
of its products without advance notice.