Milwaukee pH51 User manual

SPECIFICATIONS
Range 0.0 to 14.0 pH
Resolution 0.1 pH
Accuracy (@25 °C) ±0.1 pH
Calibration Manual, at 2 points
through trimmers
pH electrode MA73600
Environment 0 to 50 °C; 100% RH
Battery type 3 x 1.5V, alkaline
Battery life more than 1500 hours
of continuous use
Dimensions 165 x 30 x 30 mm
Weight 80 g
ACCESSORIES
MA73600 Replaceable pH electrode
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.
MA9015 Electrode storage solution,
230ml
MA9016 Electrode cleaning solution,
230ml
M10000B Electrode rinse solution, 20 ml
sachet, 25 pcs.
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
This instrument is warranted against defects in materials
and manufacturing for a period of 2years from the date of
purchase. Electrode is warranted for 1 year. 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.
ISTPH51 09/20
USER MANUAL
SATISFACTION
GUARANTEED
milwaukeeinstruments.com (USA & CAN)
milwaukeeinst.com
pH51
PRO Waterproof
pH Tester

CONDITIONING
Remove the cap and immerse the pH51
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:
yImmerse the electrode in pH7.01 (M10007)
buer solution.
yAllow the reading to stabilize and with a
small screwdriver turn the “7” calibration
trimmer inside the battery compartment
until the display shows “7.0”.
yRinse the electrode with tap water and
immerse it in pH4.01 (M10004) buer
solution.
yAllow the reading to stabilize and with a
small screwdriver turn the “4” calibration
trimmer until the display shows “4.0”.
Alkaline calibration for measurements
above pH7:
yImmerse the electrode in pH7.01 (M10007)
buer solution.
yAllow the reading to stabilize and with a
small screwdriver turn the “7” calibration
trimmer until the display shows “7.0”.
yRinse the electrode with tap water and
immerse it in pH10.01 (M10010) buer
solution.
yAllow the reading to stabilize and with a
small screwdriver turn the “4” calibration
trimmer until the display shows “10.0”.
Replace the battery compartment cap.
OPERATION
yRemove the protective cap.
yTurn the pH51 on by pressing the ON key.
yImmerse the electrode in the solution to be
tested.
yStir gently and wait for the reading to
stabilize.
yAfter use, rinse the electrode with water to
minimize contamination.
yStore the electrode with a few drops
of storage (MA9015) or pH7 (M10007)
solution in the protective cap.
yAlways 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:
yRemove the protective cap.
yUnscrew the plastic ring on the top of the
electrode.
yPull out the MA73600 pH electrode and
replace it with a new one (aligning the
colored pin towards the LCD side).
yMake sure the gaskets are in place before
screwing back the ring.
BATTERY REPLACEMENT
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.