Capillary electrophoresis

Details Capillary electrophoresis Capillary electrophoresis

G - Physics

01

N

204/99

G01N 27/447 (2006.01)

Patent

CA 1340390

an apparatus is disclosed for providing capillary electrophoresis, which includes an electronically controlled valve system for automatically introducing a sample into the capillary by means of a vacuum at the end of the capillary tube. This approach of sucking in the sample is extremely accurate and reproducible, and results in a minimum of band broadening. Furthermore, it enables the entire capillary electrophoresis system to be easily automated. An automated temperature control system is provided which enables the temperature of the capillary tube (and hence the solvent/solute system) to be controlled during electrophoresis, thereby very directly controlling pH and electrophoretic mobility. In another embodiment, the capillary is prewashed and equilibrated to achieve substantially zero charge on the capillary wall, thereby essentially eliminating electroosmotic flow and substantially improving resolution.

617038

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