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Apera Instruments, LLC-AI3109 LabSen 831 Glass-Body pH Electrode for Strong Acid Samples and HF (Hydrofluoric) Acid, Impact-Resistant Sensor, BNC Connector

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$130.61

$ 56 .99 $56.99

In Stock
  • Proprietary pH sensor technology and materials from Switzerland
  • Unique Lab Sen HF glass membrane, which has a faster response rate, better repeatability in strong acid samples, and resistant to hydro fluoride corrosion.
  • 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.
  • Standard banc connector
  • 6-Month fulfilled by Appear Instruments


Backed by proprietary Swiss sensor technology and materials, the LabSen 831 HF pH Electrode is designed for pH measurement of solutions containing Hydrofluoric acid (≥3pH), or other strong acid solutions. Special Glass Membrane – Unique LabSen HF glass membrane, which has a faster response rate, better repeatability in strong acid samples, and resistant to hydro fluoride corrosion. 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. Sensor: No; Junction: Ceramic; Reference: Silver Ion Trap; Electrolyte: 3M KCL; Length: 120mm; Diameter: 12mm; Membrane Shape: hemispherical; Range: 0-11 pH; Temp. Range: 0 to 100˚C (32 to 212˚F); Connector: BNC; Cable: 3 Father electrode uses a BNC connector, compatible with any pH meters that use BNC connectors. Temperature sensor is not built-in. Users need to have a separate temperature probe to enable ATC or manually input temperature to realize temperature compensation. The product is CE and RoHS certified, and is manufactured under an ISO 9001: 2015 certified quality system.


Mark Cannon
Reviewed in Canada on December 15, 2023
Works as described, used for six months continuously.