Electrodes

InterDigitated Array (IDA) electrodes

High sensitivity and small quantity

InterDigitated Array (IDA) electrode was developed to perform electrochemical measurements using a very small quantity of electrolyte. Its high sensitivity allows to work with very small sample quantities. Applications are ranging from redox species concentration detection to chemical reaction process control.

Each electrode is composed of a substrate made of glass and a screen-printed microelectrode pattern. Each pattern is composed of 65 electrode pairs with controlled width, length and interval. The available materials are Au, Pt, C and ITO (Indium Tin Oxide), which is a transparent conductor and allows spectelectrochemical measurements. The IDA is available with and without a passivation membrane, as well as a connection kit.

Specifications and ordering information

 

The passivation membrane is a Novolac resin with naphtoquinone-diazido compounds.

 

Electrode composition Catalog No. Width Interval Length Number of feet Film thickness
IDA electrode Au A-012257 2 µm 2 µm; 2 mm 65 pairs 90 nm
Pt A-012258 2 µm 2 µm 2 mm 65 pairs 90 nm
Au without passivation membrane A-012261 2 µm 2 µm 2 mm 65 pairs 90 nm
Pt without passivation membrane A-012264 2 µm 2 µm 2 mm 65 pairs 90 nm
Au A-012129 3 µm 3 µm 2 mm 65 pairs 90 nm
Pt A-012130 3 µm 3 µm 2 mm 65 pairs 90 nm
Au without passivation membrane A-012260 3 µm 3 µm 2 mm 65 pairs 90 nm
Pt without passivation membrane A-012263 3 µm 3 µm 2 mm 65 pairs 90 nm
Au A-012125 10 µm 5 µm 2 mm 65 pairs 90 nm
Pt A-012126 10 µm 5 µm 2 mm 65 pairs 90 nm
ITO A-012128 10 µm 5 µm 2 mm 65 pairs 100 ± 20 nm
carbon A-012127 10 µm 5 µm 2 mm 65 pairs 1200 ± 100 nm
Au without passivation membrane A-012259 10 µm 5 µm 2 mm 65 pairs 90 nm
Pt without passivation membrane A-012262 10 µm 5 µm 2 mm 65 pairs 90 nm
ITO without passivation membrane A-012265 10 µm 5 µm 2 mm 65 pairs 100 ± 200 nm
carbon without passivation membrane A-012266 10 µm 5 µm 2 mm 65 pairs 1200 ± 100 nm

 

 

Options  

Catalog No.

Cable kit for IDA electrode A-011066
Ag/AgCl ink for reference electrode (2.0 mL) A-011464

 

Request a quote.

Our team is ready to help

Contact us