The system of extrau00c7u00e7o in phase su00e0lida using potential prods and its process of extrau00c7u00e7o. Certificate of addition of invention patent application filed under the number p10703755 - 4, on September 11, 2007.Refers, this certificate of addition, the improvements and constructive variables including cartridges, electrodes and system of bi-directional flow employed in solid phase extraction with application of electric field and system of bi-directional flow.Specifically, it includes cartridges, disks, electrodes and flow system for the extraction in solid phase with the application of electric potentials in appropriate scales for the different purposes to which it applies, to form an electric field in the solution present in the stationary phases. S of the cartridges or disk extraction.
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