Horiba LAQUA 9651-10D Operating Manual
http://www.horiba.com
2 Miyanohigashi, Kisshoin Minami-ku, Kyoto 601-8510 Japan
CODE:GZ0000428526
CAUTION
Note
Responsive glass
membrane
Liquid junction
Protective cap
Support tube
Cap
Lead
Connector cover
Electrode connector
Temperature connector
pH Electrode
9651-10D Instruction Manual
December, 2015 © 2015 HORIBA, Ltd.
This manual describes the operation of the pH electrode,
9651-10D. Be sure to read this manual carefully, before
using the electrode.
Caution on use
Safety precautions
Chemical solution
If the internal material comes in contact with the hands or skin,
wash immediately with water. If the internal gel comes in contact
with the eyes, flush with a large amount of running water, then
seek medical advice.
Glass fragments
Glass fragments can cause injury.
The outer tube and tip of the electrode are made from glass.
Be careful not to break them.
Points of concern
Do not shock the electrode.
Do not measure chapped or cracked electrode. Replace
such electrode with a new one.
Do not allow the connector to come in contact with water
or unclean hands. If not, accurate measurement cannot
be performed.
If the responsive glass membrane or the liquid junction
is very dirty and cannot be washed clean using pure
water (or deionized water), clean it depending on dirt
condition. (Refer to “ Maintenance ” (page 3).)
Do not use this electrode at acidic or alkaline
concentrations above 0.01 mol/L. Using the electrode
under these conditions may harm performance and
shorten the life of the electrode.
Do not measure the solutions which contain hydrofluoric
acid, which may corrode the glass electrode.
Do not suddenly immerse the electrode in sample
solution where the temperature variation is 40C or
more.
Silver chloride can be detected inside the responsive
glass membrane. However, it will not cause any
performance problem.
Do not use the electrode in any place where usable
temperature is out of the specified range.
White crystal can adhere to the internal solution filler
port or protective cap after storage of the electrode.
However, it will not cause any performance problem.
When disposing of the product, follow the related laws
and/or regulations of your country for disposal of the
product.
Packaged contents
Specifications and parts description
Part name
Specifications
Electrode model 9651-10D
Measurement range pH 0 to 14
Usable temperature range 0C to 60C
Storage temperature range 0C to 50C
Internal electrode Silver/silver chloride
Reference electrode internal
solution
Liquid junction material Porous sintered polyethylene
Wetted material
Electrode length 150 mm
Ext. diam. of wetted part 16 mm
Liquid junction height
Lead length 1 m
Maximum submergence depth 1 m
Body material is plastic. Do not use organic solvents (such as
acetone or toluene).
Carboxymethyl cellulose (CMC),
glycerin, saturated KCl
Glass, butyl rubber, polysulfone,
polyolefin, polyamide, polyethylene resin
Approximately 15 mm (from the tip of
electrode)
Name Q’ty
Electrode 9651-10D
Instruction manual (this book) 1 booklet
1 pc
For any questions regarding this product, please contact your local
agency, or inquire from the HORIBA website.
(http://global.horiba.com/contact_e/index.htm)
Connecting to pH meter
Note
①
②
③
④
Note
Note
Protective cap
1. Insert the electrode connector into the connector port
sleeve on the meter, after aligning with the pin. Do not
insert the connector unless it is aligned properly with the
connector port.
2. Press the electrode connector into the connector port on
the meter, while turning the connector to the right.
3. Slide the connector cover over the connector. Then,
push the cover in straight until it comes in light contact
with the meter case.
Do not turn the cover.
4. Insert the temperature connector into the jack on the
meter. Insert the connector firmly, until the O-ring on the
connector can no longer be seen.
Be sure to install the temperature connector. If not, accurate
measurement cannot be performed.
Measurement (calibration)
White crystals (KCl) can adhere to the protective cap. However,
they will not cause any performance problem.
Remove the white crystals with pure water (or deionized water).
1. Remove the protective cap.
2. Clean the electrode with pure water (or deionized water)
and wipe it with filter paper or tissue paper, prior to every
immersion into the standard or sample solution.
3. When there are air bubbles inside the responsive glass
membrane, stir the electrode lightly to remove bubbles.
4. Immerse the responsive glass membrane and the liquid
junction in the sample solution completely.
Make sure that the surface of the internal gel inside the
electrode is higher than the surface of the sample
solution.
5. Rinse the electrode with the sample solution lightly to
remove bubbles. If bubbles remain on the electrode
surface, accurate measurement cannot be performed.
For calibration and measurement on pH meter, refer to the
instruction manual of pH meter.
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