Potentiometric sensor for ammonium detection



Screen-printed electrodes (SPEs) are electrochemical platforms manufactured by printing a wide variety of inks over different substrates allowing rapid on-site analysis with high reproducibility, sensitivity and accuracy.


Number of WEs: 1 WE
Working electrode material: Ammonium / carbon
Working electrode diameter: 0.40 cm
Working electrode position: In the middle of the strip
Auxiliary electrode material: Carbon
Reference electrode material: Silver
Contacts material: Silver
Substrate material: Ceramic
Substrate size: Length: 3.38 cm x Width: 1.02 cm
Substrate thickness: 0.05 cm
Main features:

Single to use sensors that eliminate the electrode maintenance. Specially designed to work with microvolumes, this inexpensive miniaturized solution presents high reproducibility making them ideal for working in decentralized assays or to develop (bio)sensors in environmental, clinical or agri-food areas. The different modifications applied to the working electrode provide an enhanced active area and improve the electron-transfer properties.

Possible applications:

These disposable Screen-Printed Electrodes are based on an ammonium ionophore for the selective detection of this ion and are recommended for working with microvolumes and are ideal for decentralized and ‘in situ’assays.

Additional information:

Designed to measure ammonium by open circuit potentiometry (OCP) in a range of concentration 10-5 to 1 M (from 0.2 to 17000 ppm).

Packaging: 50 units per pack
Storage: At room temperature, protected from light in a dry place
Suitable connectors: CAST, I-CAST, CASTDIR, CAC, CAC4MM, DSC, DSC4MM, CAST1X8
Customization options:

The design, geometry, substrate material, size or inks of this reference can be customized under your specifications and produced in large quantities upon request. For more information please contact us at info.dropsens@metrohm.com