APERA INSTRUMENTS LabSen 223 Precise 3-in-1 pH Electrode User Manual
- June 3, 2024
- APERA INSTRUMENTS
Table of Contents
**APERA INSTRUMENTS LabSen 223 Precise 3-in-1 pH Electrode User Manual
**
LabSen® electrochemical sensors are premium pH electrodes with manufacturing technology and key components imported from Switzerland. The LabSen 223 precise 3-in-1 pH Electrode integrates ATC probe, it is suitable for suspension, milk, viscous, low ion concentration, and non-aqueous solution samples measurement.
Features
This probe has the following features:
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Impact-resistant membrane (see diagram-1) , there is no danger of electrode breakage during normal use.
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Movable sleeve, able to adjust infiltration rate of electrolyte.
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Blue gel inner solution, does not flow and will not cause a bubble.
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Long life reference system, has better stability and service life.
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Fast heat conducting pH/Temp. combination structure (Swiss patented, Nr.699927), increase sensing speed by 40%, refer to **diagram-2.
**
Technical Data
| Measuring Range | (0 — 14) pH | Electrolyte | 3M KCI |
|---|---|---|---|
| Temperature Range | (-5 — 80) °C | Soaking Solution | 3M KCI |
| Shaft Material | Lead-free Glass | Temp. Probe | NTC 30k0 |
| Membrane Type | S | Electrode Dimension | (012×130) mm |
| Membrane Resistance | <150MQ | Connector | BNC / RCA |
| Reference | Long Life | Cable | 05x1m |
| Junction | Movable Sleeve |
How to Use the Movable Sleeve
As shown on the right picture, reference solution flows out of the small hole,
seeps through the tapered surface of movable sleeve. You may adjust the degree
of firmness when use, push up the
movable sleeve to loose. If it is too tight to push, please referring to the
right picture: insert the probe into the round tube (the accessory comes with
the probe), and push down the probe, then the movable
sleeve will be loosen. Please pay attention to remove the rubber plug when
adjusting the movable sleeve, enables reference solution flowing out of the
small hole; then slowly rotate and tighten the
movable sleeve, so that there will be no air remain in the tapered surface of
movable sleeve, which can greatly influence the correct.
Usage and Maintenance
-
When measuring, please unscrew the sleeve cap, pull out the electrode and rinse it with deionized
or distilled water. After using, please put the electrode back into the bottle and screw tight the cap -
Prior to measurement, remove the blue rubber plug to maintain proper air pressure of the reference solution, keeping consistent flow rate of the reference solution and stable potentials of the junction.
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After a period of usage, the reference solution will run low. Whenever the level falls to 1/2 height of the electrode, add 3M KCL solution to the refilling hole with a syringe or pipette.
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If reference solution is contaminated and needs replacement, unplug the blue rubber plug, loosen the movable sleeve (see section 3), the reference solution will flow out quickly. Once the reference solution runs out, use a syringe to add purified water through the refilling hole to rinse the electrode cavity; then rinse again with 3M KCL to remove the remaining purified water; Tighten the movable sleeve, refill 3M KCL solution with a syringe; then loosen the movable sleeve to let the solution flows out a bit, and slowly twist it clockwise to tighten, so that air can be avoided in the surface of movable sleeve.
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Drop speed of reference solution decides by the glass sleeve tightness, the tighter the slower.
Electrodes must recalibrate upon tightness adjusted. For viscous or low ion concentration solution measuring, requires fast speed. -
The connector of the electrode should be kept clean and dry. If contaminated, please clean it with
medical cotton and absolute alcohol and blow dry to prevent the short circuit of the electrode and slow reaction of electrode. -
The electrode’s measuring tip should be soaked in the storage sleeve containing 3M KCL storage solution to keep the membrane hydrated and junction unblocked. Clean the sleeve and replace the storage solution if the storage solution gets turbid or mildewed. The electrode should never be soaked in purified water or buffer solution for long.
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Please avoid measuring dehydrated medium like strong acid or alkaline solution, absolute ethyl alcohol and concentrated sulfuric acid. In case of measuring such solution, please try to reduce the immersion time and clean it carefully after use.
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After 1-year of use, we recommend replacing the electrode for best accuracy.
Limited Warranty
We warrant this electrode to be free from defects in material and workmanship and agrees to repair or replace free of charge, at option of APERA INSTRUMENTS (Europe) GmbH, any malfunctioned or damaged product attributable to responsibility of APERA INSTRUMENTS for a period of six months. Warranty period is the time limit to provide free service for the products purchased by customers, not the service life of the tester or electrodes.
This limited warranty does not cover any damages due to:
- transportation;
- storage;
- improper use;
- failure to follow the product instructions or to perform any preventive maintenance;
- modifications;
- combination or use with any products, materials, processes, systems or other matter not provided or authorized in writing by us;
- unauthorized repair;
- normal wear and tear; or
- external causes such as accidents, abuse, or other actions or events beyond our reasonable control.
Support
APERA INSTRUMENTS (Europe) GmbH
Wilhelm-Muthmann-Str. 18
42329 Wuppertal Germany
Tel.: +49 202 51988998
Email: info@aperainst.de
www.aperainst.de