The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 2007
Filed:
Apr. 23, 2003
James M. Anderson, Jr., Arlington Heights, IL (US);
Raaidah Saari-nordhaus, Antioch, IL (US);
James M. Anderson, Jr., Arlington Heights, IL (US);
Raaidah Saari-Nordhaus, Antioch, IL (US);
Dionex Corporation, Sunnyvale, CA (US);
Abstract
A method and apparatus is provided for generating a high purity eluant suitable for use in chromatography. The high purity eluant may be generated by providing water and a first stationary phase comprising exchangeable cations. Electrolysis ions are generated by the electrolysis of water. The electrolysis ions are selected from the group consisting of hydronium ions and hydroxide ions. The hydronium ions are passed through the first stationary phase so that the hydronium ions replace the cations in the first stationary phase. Thereafter, a source of desired ions is combined with the cations to form a high purity eluant containing the desired ions.