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LabSen 861 pH electrode is designed for high-accuracy pH measurement of corrosive and high-temp. solutions such as electroplating solutions.


The special PHY membrane is highly resistant to chemical corrosions, maximizing the reliability and service life of the electrode in complex and high-temp. solution testing.


The electrode uses a BNC connector, compatible with any pH meters that use BNC connectors. No temperature sensor is built-in. Users need to have a separate temperature probe (ex: Apera MP500) to enable ATC or manually input temperature to realize temperature compensation.

      LabSen 861 pH Electrode for High-temp. and Caustic Solutions

        • PHY glass membrane made for high-temp. and caustic solutions
        • The PTFE ring junction prevents junction clogs from complex chemicals.
        • Blue gel inner solution - does not flow and will not generate air bubbles.
        • Suitable for high-temperature solutions (up to 130˚C)
        • Lead-free glass body
        • Material: Lead-free glass

          Temp. Sensor: No

          Junction: PTFE

          Reference: Silver Ion Trap

          Electrolyte: Gel KCL

          Length: 120mm

          Diameter: 12mm

          Membrane Shape: Cylindrical

          Membrane Resistance: <500MΩ

          Range: 1-13 pH

          Temp. Range: 0 to 130°C

          Connector: BNC

          Cable: 3 Ft

      • We warrant this electrode to be free from defects in material and workmanship and agree to repair or replace free of charge, at the option of APERA INSTRUMENTS, LLC, any malfunctioned or damaged product attributable to the responsibility of APERA INSTRUMENTS, LLC for a period of SIX MONTHS from the delivery.

        This limited warranty does NOT cover any issues due to:

        • Accidental damage
        • Improper use
        • Normal wear and tear
        • Transportation
        • Storage
        • Failure to follow the product instructions
        • Unauthorized maintenance, modifications, combination or use with any products, materials, processes, systems or other matter
        • Unauthorized repair
        • External causes such as accidents, abuse, or other actions or events beyond our reasonable control.
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