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Built with proprietary sensor technology and premium materials from Switzerland, Apera LabSen 241-180 Glass Micro pH Electrode is designed for micro-volume samples in slim containers such as NMR tubes (minimum sample volume: 50 microliters).

LabSen Glass Membrane - LabSen 241-180 pH electrode adopts an ultra-long 180mm micro cylindrical glass membrane (ø3mm), making NMR tube pH measurement easier than ever. And it can be tested at high-temperature up to 212°F. The low-resistance membrane (<450MΩ) helps you quickly get a fully stabilized reading.

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 the reference system and extends the electrode's service life.

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 achieve temperature compensation.

LabSen 241-180 Micro pH Electrode for NMR Tubes

    • Proprietary pH sensor technology and premium materials from Switzerland
    • Low-resistance LabSen® 180mm*ø3mm micro cylindrical glass membrane, ideal for NMR tubes and other slim containers (minimum sample volume: 50 microliters)
    • Long-Life Reference System, improving the stability of the reference and extends the electrode's service life
    • Material: Lead-free glass

      Temp. Sensor: No

      Junction: Ceramic

      Reference: Long-Life

      Electrolyte: 3M KCL

      Length: 180mm

      Diameter: 3mm

      Membrane Shape: Cylindrical

      Membrane Resistance: <450MΩ

      Range: 0-14 pH

      Temp. Range: 0 to 100°C (32 to 212°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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