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Screen-printed carbon electrode for conductivity measurements

11COND

Description

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.

Features

Number of WEs: 2 WE

Working electrode material: Carbon

Working electrode diameter: 0.30 cm

Working electrode position: Distance between working electrodes 1.5 mm

Contacts material: Silver

Substrate material: Ceramic

Substrate size: Length: 3.38 cm x Width: 1.02 cm

Substrate thickness: 0.05 cm

Main features:

Disposable screen-printed electrodes designed to measure conductivity in a typical range of 84 µS cm^-1 to 111.8 mS cm^-1. Conductivity sensors are recommended for working with microvolumes and are ideal for decentralized and ‘in situ’ assays.

Possible applications:

These disposable screen-printed electrodes are specifically designed for conductivity measurements in aqueous media.

Additional information:

Recommended instuctions to work with these SPEs:

Let the sample temper at 25 ºC to obtain accurate measurements
Place 100 μL onto the cell with the aid of a micropipette
Measure |Z| in ohm at 10 kHz with an EIS potentiostat
Subtract resistance value, r₀, in ohm to the |Z| to correct contribution of the electrodes

If |Z| = 3638 Ω and r₀ = 100 Ω then

|Z| – r₀ = 3638 Ω – 100 Ω = 3538 Ω

Calculate inverted value and multiply by one million to achieve conductivity in μS

(1/3538 Ω) x 1000000 = 283 μS

Multiply the value by the K_cell to obtain final result in μS·cm-1

If K_cell = 5 cm^-1 then

283 μS x 5 cm^-1 = 1413 μS cm^-1

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