LabSen 841 Glass-body pH Electrode for Strong Alkaline


  • Proprietary pH sensor technology and premium materials from Switzerland
  • LabSen HA-type glass membrane designed for strong alkalis (pH 10-14), minimizing alkaline errors.
  • Silver Ion Trap Reference System – On top of the Long-Life reference system, a silver ion trap is added to further prevent junction clog.
  • LabSen’s sturdy glass membrane, 10 times stronger than traditional glass membranes
  • The blue gel electrolyte eliminating the chance of any air bubbles inside the sensor
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LabSen 841

Backed by proprietary sensor technology and premium materials from Switzerland, Apera LabSen 841 Glass pH Electrode is designed for high-precision pH measurement of strong alkaline solutions (10-14 pH).Silver Ion Trap Reference System – On top of the Long-Life reference system, a silver ion trap is added to prevent the junction being blocked by silver sulfide. Housing Material: Lead-free glass; Temp.

LabSen HA Glass Membrane – better accuracy and repeatability in strong alkaline solutions (10 to 14 pH), minimizing alkaline errors. Built tough – The hemispherical glass membrane is 10 times stronger than traditional glass membranes, highly resistant to general impact, saving the electrode from accidental damage.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.


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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Material Lead-free glass
Temp. Sensor No
Junction Ceramic
Reference Silver Ion Trap
Electrolyte 3M KCL
Length 120mm
Diameter 12mm
Membrane Shape Half-Ball
Range 2-14 pH
Temp. Range 0 to 100°C (32 to 212°F)
Connector BNC
Cable 3 Ft

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Apera LabSen 841 Glass pH Electrode

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LabSen 841 Glass-body pH Electrode for Strong Alkaline

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