APERA LabSen 251 Glass Spear pH Electrode User Manual
- June 3, 2024
- APERA
Table of Contents
LabSen 251 Glass Spear pH Electrode
User Manual
LabSen 251 Glass Spear pH Electrode
LabSen electrochemical sensors are premium pH electrode with manufacturing technology and key components imported from Switzerland. LabSen251 adopts spear type glass membrane, which can easily pierce solid or semi-solid medium. This electrode is suitable for cheese, meat, fruit and vegetable testing.
This probe has following features:
- Impact-resist membrane, there is no danger of electrode breakage during normal use.
- Blue gel inner solution, does not flow and will not cause bubble.
- Maintenance-free polymer electrolyte, non-diaphragm structure.
- Long life reference system, has better stability and service life.
Technical Data
| Measuring Range | (0 – 14) pH | Electrolyte | Polymer |
|---|---|---|---|
| Temperature Range | (0 – 80) °C | Soaking Solution | 3M KCI |
| Shaft Material | Lead-free Glass | Electrode | |
| Dimension | Electrode (012×100) mm |
Measuring Tip (06×35) mm
Membrane Shape| Tapered
Membrane Type| S| Membrane
Resistance| <250M0
Reference| Long Life| Connector| BNC
Junction| Ceramic+Single Pore| Cable| 03x1m
Usage and Maintenance
2.1 When measuring, please unscrew the bottle cap, pull out the electrode and rinse it with deionized water. After using, please put the electrode back into the bottle and screw tight the cap.
2.2 After long time exposure in air, Polymer electrolyte will cause shrinkage.
It will not happen in measurement status. The electrode must be soaked in 3M
KCl solution for storage. After long time soaking, there will be some
floccules dissolving out from 3M KCl solution, this is normal phenomenon.
2.3 The electrode’s measuring tip should be soaked in the soaking bottle
containing certain amount of storage solution to keep the membrane hydrated
and junction unblocked. Clean the bottle and replace the storage solution if
the storage solution gets turbid and mildewed. The electrode should never be
sinked in pure water or buffer solution for long.
2.4 The connector of the electrode should keep clean and dry. If being
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.
2.5 Spear pH Electrode is suitable for measure wet solid or semi-solid medium.
Please forcibly even when piercing, to prevent damage of the electrode. In
case the sample medium is strong (such as meat and fruit); please cut a small
hole before piercing the electrode into it.
2.6 After 1-year of use, we recommend replacing the electrode to ensure the
best accuracy.
Warranty
We warrant this electrode free from defects in material and workmanship and
agrees to repair or replace free of charge, at option of APERA INSTRUMENTS 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.
APERA INSTRUMENTS (Europe) GmbH
Address: Wilhelm-Muthmann-Str.18,
42329 Wuppertal, Germany
Phone: +49 202 51988998
Website: www.aperainst.de
Email: info@aperainst.de
References
- Apera Instruments® Meters and Sensors for pH, Conductivity, TDS, Salinity, ORP, DO, Turbidity, ISE
- Apera Instruments
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