Patent ID: 9028664
Filing Date: 2015-05-12
Classification: B01D,C07K,G01N

Abstract:
1. A method for isoelectric focusing, comprising: providing a focusing container having a channel along a longitudinal axis, said channel is configured to contain an electrolyte solution, said focusing container having a plurality of electrolysis units, distributed along said longitudinal axis, each having at least one electrode; and receiving an input defining any of a plurality of desired pH gradients having a plurality of steps in said electrolyte solution along said longitudinal axis; separately controlling the energizing of each of said plurality of electrolysis units according to said desired pH gradient to induce the injecting of either an ion flow or a proton flow into said focusing container via a membrane as an outcome of an electric field formed with respective said at least one electrode so as to create said pH gradient; wherein each said step having a substantially uniform pH level along said longitudinal axis, each one of said plurality of desired pH gradients being defined by at least one pH ramp between every two sequential steps of said plurality of steps.