Sub-second isoelectric focusing in free flow using a microfluidic device.

Xu, Yi; Zhang, Chao-Xuan; Janasek, Dirk; Manz, Andreas · Lab Chip · 2003

basic_science · Level V

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Abstract

Using a microfabricated chip with a bed volume of 0.2 microL we demonstrate the validity of the scaling laws for molecular mass transport of isoelectric focusing (IEF) in free flow. Nano- or microlitre sample volumes can be concentrated within 430 ms by a factor of up to 400. These very fast performances make the chip applicable to proteomic analysis and for continuous monitoring of biochemical processes.

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