Milwaukee MW101 - User Manual

Milwaukee

WARRANTY:

This instrument is warranted from all defects in materials
and manufacturing for a period of

two years

from the

date of purchase.

The

electrode is warranted for a period of six

months

.

If during this period the repair or replacement of parts
is required, where the damage is not due to negligence
or erroneous operation by the user, please return the
parts to either distributor or our office and the repair will
be effected free of charge.

Note

: We reserve the right to modify the design,

construction and appearance of our products
without advance notice.

Milwaukee

USER MANUAL

PORTABLE pH METER

MODEL: MW101

Smart pH Meter

OPERATION:

• The meter is supplied complete with a 9V

battery. Slide off the battery compartment
cover on the back of the meter. Install the
battery into the battery clip connector while
observing polarity.

• Always remove the electrode protective

cap before taking any measurement. If
the electrode has been left dry, soak the
tip (bottom 2.5 cm) in rinse solution
(

M10000B

) for a few minutes to reactivate

it.

• Connect the pH electrode

to the BNC socket on
the top of the meter.

• Turn the instrument on

by pressing the ON/OFF
key.

• Make sure that the meter has been

calibrated before taking any measurements
(see Calibration Procedure).

• Set the temperature knob

to the value of testing
s o l u t i o n ( m e a s u r e d
with help of an accurate
thermometer).

• Immerse the tip (2.5 cm)

of the pH electrode into
t h e s a m p l e a n d s t i r
gently.

• After completing measurements,

switch the meter off and store
the electrode with a few drops
of storage solution (

MA9015

)

in the protective cap.

CALIBRATION PROCEDURE:

A) Preparation:

Two calibration buffers are required
1.

pH 7.01

(

MA9007

)

2.

pH 4.01

(

MA9004

) if you are measuring

in acid range (pH 0 - pH 7) or

pH 10.01

(

MA9010

) if you are measuring in

alkaline range (pH 7 - pH 14).

Use two beakers for each pH buffer. One
beaker for rinsing the electrode, the other
for calibration.

Use a thermometer with 1ºC accuracy to
measure the temperature of calibration
solution.

B) Procedure:

•

Remove the protective cap
from the electrode. Rinse
the tip of the electrode with
some pH 7.01 solution, then
immerse the pH electrode
into a pH 7.01 buffer solution.

•

T a k e t h e t e m p e r a t u r e o f
the buffer solution with a
thermometer and set the
t e m p e r a t u r e k n o b t o t h e
measured temperature (e.g.
15ºC).

•

Adjust the OFFSET trimmer
(pH 7) on the front panel, with
a small screwdriver until the
LCD shows the pH value at
temperature of the buffer (see
the pH versus temperature
chart).
E . g . i n t h i s c a s e , i f t h e
temperature is 15ºC, the
m e t e r d i s p l a y s h o u l d b e
adjusted to read “pH 7.04”.

•

Now rinse the pH electrode
in the first pH 4.01 beaker,
then immerse it into the
second pH 4.01 beaker or
follow the same procedure
if using pH 10.01 buffer.