Refex pH/ORP Sensors

At the heart of every Refex electrode is a unique nonporous reference system that delivers high-quality performance, stable readings, and accurate measurements. Refex sensors last many times longer than conventional electrodes with porous junction reference cells, require minimal maintenance, and exhibit minimal drift. Refex sensors are available in many industry standard sizes, and can readily retrofitted for existing installations.

The Refex reference is a patented, highly stable, non-porous polymeric interface. The active reference area comprises the entirety of the outside surface of the electrode and this extremely large contact area means that electrode performance is supremely resistant to coating. Drift and premature “death” from the poisoning effects of substances such as cyanide, ammonia, and sulfides are eliminated because the polymeric reference material is conductive to ions but being non-porous, does not allow process material to diffuse into the cell; the reference operates electrically, but electrolyte and process fluids are not exchanged.

Refex probes are ideal for both extreme and remote/unattended applications where pH sensor reliability is a must. Highly resistant to poisoning and electrode dilution, REFEX sensors can be used with great success in applications with oily/fatty process water/wastewater as they are largely impervious to the greater pollution loads these applications carry.