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Built with proprietary sensor technology and premium materials from Switzerland, Apera LabSen 881 Glass pH Electrode is ideal for pH measurements of low-temperature solutions (down to -22 °F).

LabSen L Glass Membrane with conical shape - providing fast response even in low-temp. solutions thanks to its ultra-low resistance formula (<50MΩ), and yet highly resistant to general impact, 10 times stronger than traditional glass membranes.

Silver Ion Trap Reference System+Protelyte Electrolyte - LabSen 881 pH Electrode adopts a Silver Ion Trap reference system and Protelyte reference solution. On top of the Long-Life reference system, a silver ion trap is added to minimizing junction clogs, significantly extending the service life of the electrode.

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 Instruments MP500) to enable ATC or manually input temperature to realize temperature compensation.

      LabSen 881 Glass-body pH Electrode for Low Temperature Solutions, BNC Connector

        • Proprietary pH sensor technology and premium materials from Switzerland
        • Built with a special low-resistance glass membrane for low-temperature solution testing
        • LabSen L membrane with conical shape - fastest response and built tough, made for low-temp. solutions
        • Silver Ion Trap Reference System+Protelyte Electrolyte
        • Material: Lead-free glass

          Temp. Sensor: No

          Junction: Ceramic*3

          Reference: Silver Ion Trap

          Electrolyte: Protelyte

          Length: 120mm

          Diameter: 12mm

          Membrane Shape: Conical

          Membrane Resistance: <50MΩ

          Range: 1-11 pH

          Temp. Range: -30 to 80°C (-22 to 176°F)

          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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