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Backed by proprietary Swiss sensor technology and premium materials, LabSen 241-3SP Glass Micro pH Electrode is designed for micro-volume samples (≥30 microliters) containing proteins such as serum and microbiological samples. With the ultra-micro container (sold separately), it can test as low as 15 microliters.

Unique Glass Membrane – LabSen 241-3SP pH electrode adopts a micro cylindrical sensor tip (top end ø3mm, stainless steel ø4mm), making micro-sample pH testing easier than ever, and can be tested in high-temperature samples (up to 212°F). The stainless steel protective shaft ø4mm) ensures the durability of the slim glass tube.

Protelyte electrolyte – A specialized oily reference solution made for protein solutions and viscous samples.

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 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 241-3SP Micro pH Electrode for Micro-Volume Solutions Containing Proteins

    • Proprietary pH sensor technology and premium materials from Switzerland
    • Low-resistance LabSen® micro cylindrical glass membrane, suitable for micro-volume pH measurement (>30 microliters)
    • Protelyte electrolyte made for protein-containing solutions such as serum and microbiological samples.
    • The stainless steel protective shaft ensures the durability of the slim glass tube
    • Long-Life Reference System, improving the stability of the reference and extends the electrode's service life
    • With the micro container (sold separately), it can test as low as 15 microliters.
    • Material: Lead-free glass

      Temp. Sensor: No

      Junction: Ceramic

      Reference: Long-Life

      Electrolyte: Protelyte

      Length: 130mm

      Diameter: 12-4-3mm

      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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