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LabSen 873 combines a solvent-oriented double-junction reference, PHY glass membrane and a built-in temperature sensor. Its BNC/RCA connections suit compatible pH meters requiring both pH and 30 kΩ NTC temperature signals.
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For LabSen 873 measurements in water-miscible solvents, use 1 M LiCl in ethanol to refill the outer reference chamber.
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APERA INSTRUMENTS / LABSEN 873 / AI3249
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The outer reference bridge uses 1M LiCl electrolyte and a movable sleeve junction. This construction is intended for water-miscible and water-immiscible organic solvents.
The method still matters: conventional aqueous pH buffers and solvent measurements are not automatically interchangeable reporting systems. Follow your solvent-specific analytical procedure.
The PHY membrane is designed to maintain the hydrated sensing layer in solvent applications. The blue gel inner electrolyte is intended to avoid internal air bubbles and preserve stable contact.
Handle the glass carefully and keep the sensing membrane and junction clean. Use the specified outer-bridge refill solution rather than substituting a general pH storage solution for every task.
The current manufacturer dimensions are Ø12 × 130 mm. The operating window is 1–13 pH and 0–80°C; the sample and method must fit both limits.
The dimensioned manufacturer photo helps you check vessel access and immersion. It does not imply the connector or cable may be immersed.
BNC carries the pH signal and RCA carries the built-in 30 kΩ NTC temperature signal. Match both requirements to the meter; fitting the BNC plug alone is not enough to establish ATC compatibility.
For an electrode without built-in temperature, compare LabSen 871 and provide a separate temperature arrangement. The 873 keeps pH and temperature sensing in one electrode body.
Match the stated limits and configuration to your procedure. The Product Specifications tab repeats the order details for quick reference.
Apera PH8500 Portable pH Meter Kit with 201T-F Electrode and USB Data Logging
Apera 602 Flexible Electrode Holder (AI2810)
pH measurement in organic solvents and non-aqueous samples using an appropriate analytical method.
The 873 includes a temperature sensor and BNC/RCA plugs; 871 is the BNC pH-only configuration.
The manufacturer specifies 1M LiCl for the outer bridge. Follow the electrode instructions for refilling and storage.
It contains a 30 kΩ NTC temperature sensor. ATC also requires a compatible meter and RCA temperature input.
The manufacturer specifies 1–13 pH and 0–80°C for this electrode.
Not necessarily. The pH connection is BNC, while temperature also requires the correct RCA input and thermistor compatibility.
Apera currently uses AI3249 for LabSen 873.
No. Solvent chemistry affects the electrode response and meaning of pH. Use the procedure and calibration appropriate to the sample.
Review the order contents and the required host meter and application before ordering. Contact Blue Tiger Scientific if you need help matching the part.
Apera’s six-month limited electrode warranty covers qualifying defects in materials and workmanship from delivery, subject to its terms and exclusions.
For setup, compatibility or troubleshooting support, contact Blue Tiger Scientific with the model, order number and a description of the issue.
Contact Blue Tiger Scientific before returning a product. Return eligibility and instructions depend on the store’s applicable return policy and the condition of the item.
Document scope is shown on each card. A parent-meter manual or family handbook may describe other configurations and does not change the order contents on this page.
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