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Proceedings Paper

Portable CE system with contactless conductivity detection in an injection molded polymer chip for on-site food analysis
Author(s): Holger Becker; Holger Mühlberger; Werner Hoffmann; Thomas Clemens; Richard Klemm; Claudia Gärtner
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Paper Abstract

We present a compact portable chip-based capillary electrophoresis system that employs capacitively coupled contactless conductivity detection (C4D) operating at 4 MHz as an alternative detection method compared to the commonly used optical detection employing laser-induced fluorescence. The disposable chip for this system is fabricated out of PMMA using injection molding; the electrodes are screen-printed or thin-film electrodes. The system allows the measurement of small ions like Li, Na, K typically present in foodstuff like milk and mineral water as well as acids in wine.

Paper Details

Date Published: 13 February 2008
PDF: 7 pages
Proc. SPIE 6886, Microfluidics, BioMEMS, and Medical Microsystems VI, 68860C (13 February 2008); doi: 10.1117/12.773579
Show Author Affiliations
Holger Becker, microfluidic ChipShop GmbH (Germany)
Holger Mühlberger, Forschungszentrum Karlsruhe (Germany)
Werner Hoffmann, Forschungszentrum Karlsruhe (Germany)
Thomas Clemens, Clemens GmbH (Germany)
Richard Klemm, microfluidic ChipShop GmbH (Germany)
Claudia Gärtner, microfluidic ChipShop GmbH (Germany)

Published in SPIE Proceedings Vol. 6886:
Microfluidics, BioMEMS, and Medical Microsystems VI
Wanjun Wang; Claude Vauchier, Editor(s)

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