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Built with proprietary sensor technology and premium materials, Apera LabSen 371 POM-body pH Electrode is designed for flat surface pH measurement such as skin, paper, textiles, etc.

Special Flat Glass Membrane -  LabSen 371 pH electrode adopts a flat glass membrane with PTFE ring junction, making reliable surface pH test easier than ever.

Long-Life Reference System - composed of a glass tube, AgCl, and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when the temperature changes. It improves the stability of reference system and extends the service life of the electrode.

The electrode uses a standard 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 371 POM-body Flat pH Electrode for Surface Test, BNC Connector

    • Proprietary pH sensor technology and premium materials from Switzerland
    • Special LabSen flat glass membrane, suitable for flat surface pH measurement such as skin, textiles, paper, etc.
    • Long-Life Reference System, improving the stability of reference electrode and prolong the service life of the electrode
    • Anti-clogging PTFE ring junction
    • No more air bubbles inside the glass membrane thanks to the Swiss blue gel electrolyte.
    • Material: POM

      Temp. Sensor: No

      Junction: PTFE

      Reference: Long-Life

      Electrolyte: 3M KCL

      Length: 110mm

      Diameter: 12mm

      Membrane Shape: Flat

      Membrane Resistance: <500MΩ

      Range: 0-14 pH

      Temp. Range: 0 to 80°C (32 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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