1
with pH and temperature.
INE-E-301 Serials: plastic shell
(polycarbonate),
INE-E-303 Serials
：
Glass shell
，
Operation
1.
Please keep the measuring side
downward, take the black
electrode cap and swing it gently
for several times. Besides, you
should check if there is air bubble
in the glass membrane and
reference salt-bridge. Glass
membrane and reference
salt-bridge should be filled with
solution without air bubble.
2.
Please remove the plug from the
filling hole and connect electrode
with pH meter. Then you should
calibrate electrode slope with two
different buffers.
(Please refer to operational manual for
calibration.)
Maintenance
1.
Please add 18mm KCl solution
(3.0mol/L) in the protective jacket
of electrode. Hold the protective
jacket gently and make it flat.
Then install it on the electrode
measuring side.
2.
Insert the plug back into the filling
hole and put the electrode back to
box in ambient temperature.
Note
1.
Immerse the electrode in the buffer
solution or measured solution,
please hold electrode to stir
solution several times quickly so
that glass membrane and
salt-bridge are filled with solution.
2.
To obtain correct measuring result,
electrode calibration and
measurement should have same
conditions.
3.
The liquid level of electrode
external reference liquid should be
kept at 10mm below filling hole.
The liquid level should be higher
than level of measured solution.
4.
You should always keep electrode
plug clean and dry.
5.
Please don’t immerse electrode in
sample solution for a long time.
6.
After using the electrode, please
rinse it carefully.
7.
The components which touch
sample solution include PC
(polycarbonate) shell, glass
accessories and silicon rubber.
Before measurement, you should
confirm that your sample solution
does no react to electrode material.
8.
Please keep electrode serial
number(white casing on the cable )
in good condition. Don’t replace
electrode plug at will. Otherwise,
you can not enjoy after-sale
service of this product.
Troubleshooting
Why can’t I calibrate electrode
slope?
1.
Please make sure the preserved
status of electrode is with
requirements of ‘Maintenance’
before using electrode. If the
electrode is not preserved correctly,
please immerse it into KCl
(3.0mol/L) solution for more than
2 hours.
2.
Please check if the electrode is
qualified to measure: Please adjust
the meter to display mV mode.
Immerse the electrode in pH4.00
and pH9.18 Standard buffer
solution. Record value displayed
of the meter. The sum of absolute
value should exceed 292mV.
3.
With regard to unqualified
electrode, you can rinse and clean
it (Please read ‘Troubleshooting’
for reference.)
Which kind of standard buffer
solution should I use to
calibrate electrode?
1.
Generally, there are two groups of
buffer solution for electrode
calibration. They are pH4.00,
pH6.86 and pH9.18 or pH4.00,
pH7.00 and pH10.00. Please
choose fresh standard buffer
solution as soon as possible.
2.
If your sample solution is acid,
please use standard buffer solution
of pH4.00 and pH6.86 or pH7.00
for calibration. If your sample
solution is alkaline, then you need
to use standard buffer solution of
pH6.86 and pH9.18 or pH10.00 for
calibration.
How to make external reference
solution of electrode?
1.
In each electrode packing box,
