Glass pH Electrode APERA LabSen®211 for Scientific Research and Quality Control in Regular Water Solutions

The Apera Instruments LabSen 211 Combination pH Electrode Sensor, backed by patented Swiss sensor technology and materials, is ideal for precise measurement of regular water solutions and water pH testing in scientific research and quality control applications. This electrode is compatible with TRIS buffer solutions and features LabSen's proprietary blue hemispherical glass membrane design—offering faster response times, superior repeatability, and exceptional mechanical durability against impact compared to traditional fragile glass bulb membranes. The sensor is capable of testing high-temperature samples up to 225°F (107°C). The LabSen® 211 incorporates a Long-Life Reference System comprising a glass tube, AgCl, and silver reference wire. The upper end of the thin glass tube is lined with cotton to prevent reaction between AgCl and electrolyte during temperature fluctuations, enhancing reference electrode stability and extending the electrode's service life. The electrode features a BNC connector compatible with all Apera pH meters using BNC connectors, including MP511, PH850, PH8500, PH700, PH800, PH910, PH950, PH820, and PC820. No built-in temperature sensor—users require a separate temperature probe (e.g., Apera MP500) to enable ATC or manual temperature compensation.

Technical Specifications

Applications

• Scientific research laboratories requiring precise pH measurement in aqueous solutions
• Quality control testing in water treatment and analysis
• Environmental water monitoring and analysis
• High-temperature sample analysis up to 225°F
• Buffer solution compatibility testing with TRIS solutions
• Integration with Apera multi-parameter water quality analyzers