High-Pressure Ag/AgCl Reference Electrode - 6/75 mm

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It is a compact refillable high-pressure Ag/AgCl reference electrode equipped with nanoporous polymer frit installed into the PEEK body. This electrode outperforms competing products in terms of mechanical stability, voltage stability and lifetime. In general, the reference electrode is composed of a system of phases, which retain an essentially constant composition, and therefore provides a stable potential by which the working electrode potential can be monitored even at high pressure and high temperature. The phases present in reference electrodes undergo reversible redox processes at a very high rate, enabling them to rapidly adjust to changes in the solution’s ionic activity, but leaving them sensitive to the passage of large current densities.

Application note

This high-pressure electrode is commonly used with aqueous acidic electrolytes, but due to the low resistance of the frit it can be used with standard non-aqueous electrolytes, as well. The high-pressure electrodes should be installed in the high-pressure cell using Swagelok electrode fitting 6 mm OD. Before use rinse it with deionized water and fill it up with an electrolyte (preferably 3M KCl, not included in the set) through the electrolyte inlet using a syringe with a needle. For cleaning, use detergent (dishwashing detergent with water), alcohols, or acetone, and rinse it with deionized water at the end.

Specification

Effective length: 75 mm
Tube diameter: 6 mm
Filling solution: 3M KCl (not included)
Potential stability: <5 mV
Polymer frit resistance: 2-10 kohm at RT
Maximum temperature: 250 deg C
Maximum pressure: 50 bar
Potential vs SHE at 25 °C: 0.207 V

Intrastat Data

HS Code: 90278930
Country of Origin: Sweden
NET weight: 100g

Setup includes

1x high-pressure Ag/AgCl refillable reference electrode
1x glass tube

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Reference Electrodes