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What is Refex?

REFEX reference junctions are manufactured from an electrochemically conductive, salt loaded, polymeric matrix. When installed in an electrode, there is no porous junction to allow liquid contact between process fluids and the internal (sealed for life) Ag/AgCl reference half-cell. REFEX provides a stable mV output for measurement and ensures that process fluids do not poison or deplete reference cell electrode or electrolyte

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The Issue With Existing Sensors

Refex products represent a revolutionary advance in pH and ORP measurement technology that solves the key weakness of the reference electrode in traditional probe designs. These traditional designs depend upon having a porous junction to provide electrochemical connection between the probe’s reference electrode and the process flow being measured. This necessary contact with process fluid allows interaction with the [stable] internal liquid in the reference half-cell, commonly diluting and/or poisoning it and causing measurement drift while leading to eventual sensor failure. In harsh applications, this interaction can lead to rapid failure.

The Refex Solution

Advantages of Refex non-porous sensors:

  • Resistant to fouling and poisoning
  • Protected Ag/AgCl reference half-cell – Refex barrier/interface prevents all liquid contact/exchange.
  • Resistant to high and changing temperatures between 0 – 100°C
  • Resistant to high and changing pressures between full vacuum and 20 bar pressure.
  • Instant response to pH change
  • Constant Eo zero – no continuous drift over time
  • Long, long electrode life – many times longer than all others
  • Compatible with all standard, modern pH instruments with dual high impedance inputs
  • No diffusion potential errors in low ionic water applications
  • No KCl electrolyte loss due to dilution
  • No refilling of KCl electrolyte – sealed for life.

The Production Process

REFEX™ pH Sensors manufacture many varied pH sensor types, for many industrial processes, and for general purpose applications. Check out our video which shows the Refex production process and explains how Refex can help save your company money.

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Combination Probes

REFEX combination probes are available in industry standard sizes and designed to fit in any existing or new “socket” where pH or ORP measurement is made. REFEX reference sensors can be used in all applications, particularly those where fouling or poisoning conditions exist. REFEX sensors have a usable lifetime of 5 times longer than conventional sensors. REFEX reference utilizes a patented, highly stable, non-porous polymeric interface instead of a traditional porous liquid junction as used by conventional reference electrodes. The active reference area is the whole of the outside surface of the electrode and this super large contact area means that electrode performance is supremely resistant to coating. Poisoning effects are eliminated because the polymeric reference material is conductive to ions but not porous; the reference can operate electrically but electrolyte and process fluids are not exchanged.
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Reference Probes

REFEX 12mm separates are available in all industry standard lengths and a variety of connector/integral cable styles to ensure they will fit in any 12mm “socket” where pH or ORP measurement is made. REFEX sensors work will all popular pH/ORP transmitters with high impedance inputs. REFEX reference sensors are a tremendous upgrade to traditional porous/flowing junction reference probes and can be used in all applications, especially those where fouling or poisoning conditions exist. With lifetimes expected to be 5 times or more than existing designs, REFEX reference electrodes represent significant savings in maintenance and replacement costs. REFEX sensors are available in a variety of packages to suit all pH and ORP applications: pH glass sensors, Platinum ORP sensors, Reference sensors
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We Want Your Opinion

We want to know about your:

  • pH applications
  • Chemistry
  • PH and temperatures pressures challenges and problems
  • Existing equipment being used
  • Maintenance  frequency
  • Electrode life