Milwaukee pH55 PRO User manual

To replace the batteries unscrew the battery
compartment cap and replace all four 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.
ACCESSORIES
MI56P Replaceable electrode for pH55 & pH56
M10004B pH 4.01 buer, 20 ml sachet, 25 pcs.
M10007B pH 7.01 buer, 20 ml sachet, 25 pcs.
M10010B pH 10.01 buer, 20 ml sachet, 25 pcs.
MA9004 pH 4.01 buer, 230 ml bottle
MA9006 pH 6.86 buer, 230 ml bottle
MA9007 pH 7.01 buer, 230 ml bottle
MA9009 pH 9.18 buer, 230 ml bottle
MA9010 pH 10.01 buer, 230 ml bottle
MA9015 Electrode storage solution, 230 ml
MA9016 Electrode cleaning solution, 230 ml
M10000B Electrode rinse solution, 20 ml sachet,
25 pcs.
SPECIFICATIONS
RANGE -2.0 to 16.0 pH (pH55);
-2.00 to 16.00 pH (pH56);
-5.0 to 60.0°C / 23.0 to 140.0°F
RESOLUTION 0.1 pH (pH55);
0.01 pH (pH56);
0.1°C / 0.1°F
ACCURACY (@25°C) ±0.1 pH (pH55);
±0.05 pH (pH56);
±0.5°C / ±1°F
TYPICAL EMC DEVIATION ±0.1 pH (pH55);
±0.02 pH (pH56);
±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 buers
(pH 4.01, 7.01, 10.01 or 4.01, 6.86, 9.18)
PROBE Replaceable MI56P
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
CERTIFICATION
Milwaukee Instruments conform to the CE
European Directives.
Disposal of Electrical & Electronic Equipment.
Do not treat this product as household waste. Hand
it over to the appropriate collection point for the
recycling of electrical and electronic equipment.
Disposal of waste batteries. This product contains
batteries. Do not dispose of them with other
household waste. Hand them over to the appropriate
collection point for recycling.
Please note: proper product and battery disposal
prevents potential negative consequences
for human health and the environment. For
detailed information, contact your local
household waste disposal service or go to
www.milwaukeeinstruments.com (USA & CAN)
or www.milwaukeeinst.com.
RECOMMENDATION
Before using this product, make sure it is entirely
suitable for your specific application and for the
environment in which it is used. Any modification
introduced by the user to the supplied equipment
may compromise the meter’s performance. For your
and the meter’s safety do not use or store the meter in
hazardous environment. To avoid damage or burn, do
not perform any measurement in microwave ovens.
WARRANTY
These instruments are warranted against defects in
materials and manufacturing for a period of 2years
from the date of purchase. Probe is warranted for
6 months This warranty is limited to repair or free
of charge replacement if the instrument cannot
be repaired. Damage due to accidents, misuse,
tampering or lack of prescribed maintenance is not
covered by warranty. If service is required, contact
your local Milwaukee Instruments Technical Service.
If the repair is not covered by the warranty, you will
be notified of the charges incurred. When shipping
any meter, make sure it is properly packaged for
complete protection.
Milwaukee Instruments reserves the right to
make improvements in design, construction and
appearance of its products without advance notice.
ISTPH56 07/20
USER MANUAL
SATISFACTION
GUARANTEED
milwaukeeinstruments.com (USA & CAN)
milwaukeeinst.com
pH55 & pH56
PRO Waterproof
pH/Temperature
Testers
pH56
ON/OFF
CAL
SET
HOLD
pH56
pH/Temp Waterproof

Automatic temperature
compensation indicator
Instability
indicator
Calibration
indicator
Low battery
indicator
Measuring
unit
Main
LCD
Secondary
LCD
Temperature
Unit
OPERATIONAL GUIDE
yRemove the electrode cap and immerse the
meter in MA9015 storage solution for 2hours to
activate the electrode.
yTurn the meter on by pressing the ON/OFF
button. All the used segments on the LCD will
be visible for 1 second or as long as the button
is pressed.
yImmerse the electrode in the solution to be
tested. Stir gently and wait for the reading to
stabilize, i.e. the instability indicator (hourglass)
on the LCD turns o.
yThe pH value is automatically compensated for
temperature and will be displayed on the main
LCD, while the temperature is shown on the
secondary LCD.
yTo freeze the display, while in measurement
mode, press and hold the SET/HOLD button.
The “HOLD” message appears on the secondary
display and the reading will be frozen on the
LCD.
Press any button to return to normal mode.
yTo turn the meter o, press the ON/OFF
button. The “OFF” message will appear on the
secondary display. Release the button.
Note:
yBefore taking any measurement, make sure the
meter is calibrated (the CAL tag is on).
yAfter use always turn the meter OFF, rinse the
electrode with water to minimize contamination
and store it with a few drops of storage (MA9015)
or pH7 (M10007) solution in the protective cap.
NEVER USE DISTILLED OR DEIONIZED WATER FOR
STORAGE PURPOSE.
CALIBRATION PROCEDURE
For better accuracy, frequent calibration of
the tester is recommended. Calibration is also
necessary after electrode replacement, after
testing aggressive chemicals and where extreme
accuracy is required.
yFrom normal operation mode, press and hold
the ON/OFF/CAL button until the “OFF” message
on the secondary LCD is substituted by “CAL”.
Release the button.
yThe instrument enters the calibration mode by
displaying “pH 7.01 USE” (or “pH 6.86 USE” if the
NIST buer set was selected).
yFor a single-point calibration, immerse the
electrode in any buer, i.e. pH 4.01, 7.01 (or 6.86),
10.01 (or 9.18).
yThe meter activates the automatic buer
recognition. If no valid buer is detected, the
meter keeps the USE indication active for 12
seconds, and then replaces it with WRNG,
indicating that the sample being measured is
not a valid buer. Otherwise, if a valid buer is
detected, then its value is shown on the primary
display, and REC appears on the secondary LCD.
yIf the pH 7.01 (or pH 6.86) was used, press the
SET button to exit the Calibration mode and the
“OK 1” message will appear on the display. The
first calibration point is stored and the meter
returns to normal measurement mode.
For better accuracy, it is always recommended
to perform a 2-point calibration.
yFor a two-point calibration, immerse the
electrode in pH 7.01 (or pH 6.86) buer solution.
yAfter the first point has been accepted, the
meter will then ask for the second buer and
the message “pH 4.01 USE” will appear.
yRinse the electrode and immerse it in the
second solution (pH 4.01, 10.01 or 9.18).
yIf a valid buer value is detected, the REC
message is displayed and the meter completes
the calibration procedure. The LCD shows the
accepted value with the “OK 2” message and the
instrument returns to the normal measurement
mode. Otherwise, if no valid buer is detected,
the meter displays the WRNG message.
Note: When the calibration procedure is
completed, the CAL tag is turned on.
yTo 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.
yTo 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 calibration and the CAL tag on the
LCD turns o.
SETUP
Setup mode allows the selection of temperature
(°C or °F) and pH buer 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 temperature
unit (e.g. TEMP°C). Then:
yfor °C/°F selection: use the SET/HOLD button;
then press the ON/OFF button once to enter
the buer set selection or twice to return to the
normal measurement mode.
yto change the calibration buer set: after
setting the temperature unit, press ON/OFF
once and select the buer 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.
ELECTRODE REPLACEMENT
yRemove the protective cap and unscrew the
plastic ring on the top of the electrode.
yPull out the MI56P electrode and replace it with
a new one.
yMake 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 o.
It is recommended to replace the batteries
immediately.