Apera LabSen® 213 Combined pH Electrode

Apera LabSen® 213 Combined pH Electrode

SKU: 28APE190294 / AI3121

The Apera Instruments LabSen® 213 Combined pH Electrode is a high-quality pH electrode with an integrated temperature sensor, designed for precise, stable, and responsive pH measurement across various aqueous solutions. This electrode is ideal for scientific research, laboratories, quality control, and routine pH measurement applications that require consistent measurement results.

This electrode uses a long-life reference system consisting of a glass tube, AgCl, and a reference silver wire. The upper part of the thin glass tube is filled with cotton to help prevent reactions between AgCl and the electrolyte when temperature changes occur. This reference system helps improve measurement stability and extend the electrode’s service life.

The LabSen® 213 also uses a patented pH/temperature combination structure, in which the temperature element is placed in an independent cavity below the pH glass membrane. With the help of an integrated thermally conductive medium, the temperature sensor can provide a response approximately 40% faster, helping improve response speed and pH measurement stability.

The electrode uses a gel electrolyte so there are no air bubbles in the electrolyte system. The LabSen® 213 is also compatible with TRIS buffer solutions, making it suitable for various measurement applications in aqueous solutions.

The pH connection uses a BNC connector, so it can be used with various pH meters that have a BNC connector. The integrated temperature sensor uses an RCA/Cinch connector, and its compatibility may differ with devices from other manufacturers.

Key Features

• Combined pH electrode with integrated temperature sensor

• Designed for precise and stable routine pH measurement

• Suitable for scientific investigations and quality control

• Swiss pH sensor technology and materials

• Uses LabSen S-Type Hemispherical Glass Diaphragm

• Low-resistance glass diaphragm for fast measurement response

• Readings can reach a stable condition in approximately 15–30 seconds

• Stronger membrane construction to help reduce the risk of impact damage

• Long-life reference system with AgCl and reference silver wire

• Reference system helps improve stability and electrode service life

• Patented structure for combined pH and temperature measurement

• Temperature sensor placed in an independent cavity below the pH glass membrane

• Temperature measurement response approximately 40% faster thanks to the thermally conductive medium

• Uses gel electrolyte with no air bubbles

• TRIS buffer compatible

• BNC connector for pH measurement connection

• RCA/Cinch connector for integrated temperature sensor

• Temperature sensor uses NTC 30kΩ

• Uses lead-free glass on the shank

• Long-life reference system

• Ceramic junction for the reference system

Specifications

pH

• Measurement Range: 0–14 pH

• Glass Diaphragm Type: S-Type Hemispherical

• Diaphragm Resistance: <150 MΩ

• pH Glass Technology: Swiss technology

• Shank Material: Lead-free glass

• TRIS Compatibility: Yes

• Electrolyte: 3M KCl

• Storage Solution: 3M KCl

Temperature

• Temperature Sensor: NTC 30kΩ

• Temperature Sensor Type: Integrated

• Recommended Operating Temperature: -5 to 100°C

• Temperature Structure: Patented independent cavity under pH glass membrane

• Thermal Response: Approximately 40% faster with integrated thermally conductive medium

Reference System

• Reference System: Long Life

• Reference Components: Glass tube, AgCl, reference silver wire

• Junction: Ceramic

• Reference Electrolyte: 3M KCl

• Reference System Design: Cotton-filled thin glass tube to help prevent AgCl/electrolyte reaction caused by temperature changes

Electrode Construction

• Electrode Dimension: Ø12 × 120 mm

• Shank Material: Lead-free glass

• Glass Diaphragm: S-Type

• Electrolyte: Gel electrolyte / 3M KCl

• Cable Diameter: Ø5 mm

• Cable Length: 1 m

• Connection: BNC / RCA (Cinch)

Physical Specifications

• Product Dimensions: 35 × 11 × 4.5 cm

• Weight: 0.3 kg

• Recommended Operating Temperature: -5 to 100°C

• Storage Solution: 3M KCl

Connection and Compatibility

The LabSen® 213 uses a BNC connector for the pH connection, which is compatible with pH meters that use a BNC connector. The integrated temperature sensor uses an RCA/Cinch connector.

• Apera PH850

• Apera PC850

• Apera PH8500

• Apera PC8500

• Apera PH700

• Apera PH910

• Apera PC910

• Apera PH950

• Apera PC950

• Apera PH800

• Apera PC800

• Apera PH820

• Apera PC820

Note: The BNC connector can be used with pH meters that have a BNC connector, but the integrated temperature sensor with RCA connector is not always compatible with measuring devices from other manufacturers. Make sure the device being used supports an NTC 30kΩ temperature sensor.

Applications

The Apera LabSen® 213 is suitable for various pH measurement needs in aqueous solutions, including:

• Scientific research

• Research laboratories

• Quality control

• Water analysis

• Aqueous solution testing

• Routine pH measurement

• Educational laboratories

• Testing that uses TRIS buffer

• Laboratory applications requiring simultaneous pH and temperature measurement

Summary

The Apera Instruments LabSen® 213 Combined pH Electrode, SKU 28APE190294 / AI3121, is a pH electrode with an integrated NTC 30kΩ temperature sensor designed to produce precise, stable, and responsive pH measurements. With its LabSen S-Type Hemispherical Glass Diaphragm, long-life reference system, ceramic junction, and patented pH/temperature combination structure, this electrode offers a combination of response speed, stability, and durability.

Support for TRIS buffer, gel electrolyte, BNC connection for pH, and RCA connection for temperature make the LabSen® 213 suitable for use with various Apera Instruments pH meters and professional laboratory applications.