Alltech Associates, Inc.

Dionex Corporation

Other

James M Anderson, Jr

Raaidah Saari-Nordhaus

Carl W Sims

Yuri E Gerner

Washington Mendoza

Josef Bystron

Bart C Benedict

Bruce Christian Black

Neil Robert Picha

Sheldon J Nelson

Dirk Helgemo

Ronald Krob

Arnold Williams

Raaidah Saari-Hordhaus

Yuri Gurner

Hung Anthony Pham

Melissa Wilcox

Carl Hermann Poppe

Steve A Lewis

Nick Klein

Kristine Olsen

Bruce Frohman

Dennis K Mc Creary

Romulus Gaita

Methods and apparatus for analyzing a sample using at least one detector are disclosed.

Methods and apparatus for analyzing samples and collecting sample fractions

Methods and apparatus for moving aliquot samples of fluid using a shuttle valve are disclosed.

Methods and apparatus for moving aliquot samples of fluid

Chromatography systems and components suitable for use in chromatography systems are disclosed. Methods of making chromatography systems and components suitable for use in chromatography systems and methods of using chromatography systems and components suitable for use in chromatography systems are also disclosed.

Chromatography systems and system components

An apparatus and method for electrochemically modifying the retention of a species on a chromatography material is disclosed. The apparatus comprises a housing having an effluent flow channel adapted to permit fluid flow therethrough. The effluent flow channel comprises chromatography material. The apparatus further comprises first and second electrodes positioned such that at least a portion of the chromatography material is disposed between the first and second electrodes, and fluid flow through the apparatus is between, and in contact with, the first and second electrodes.

Apparatuses and methods for electrochemically modifying the retention of species on chromatography material

Method and apparatus for generating a high purity eluant

High-purity eluant generator

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.

Method and apparatus for generating high purity eluant

The present invention is directed to a system for converting between single flow and split flow evaporative light scattering detection devices for detecting samples in a mobile phase. Included in the system is a evaporative light scattering detection device, a low temperature adaptor, and a connection tube for providing a fluid connection between the evaporative light scattering detection device and the low temperature adaptor.

Low temperature adaptor for evaporative light detection

An ion exchange chromatography apparatus includes a first stationary phase and a second stationary phase. The first stationary phase has at least one complexing agent functional group capable of forming a complex with at least one ion present in a sample that contains at least two ions when the sample contacts the first stationary phase. The second stationary phase is distinct from the first stationary phase and has at least one non-complexing agent functional group capable of exchanging with the ions present in the sample, other than the one complexed by the complexing agent functional group.

Liquid chromatography apparatus having two stationary phases

An integrated suppressor and detector for suppressed ion chromatography includes a stationary phase, a fluid flow path, at least first and second regeneration electrodes, and at least first and second sensor electrodes. Methods of suppressed ion chromatography using the integrated suppressor and detector are also described.

Continuously regenerated and integrated suppressor and detector for suppressed ion chromatography and method

Method of detecting sample ions by continuous electrochemical regeneration of a stationary phase

Method and system for generating a high purity eluant

Methods and devices for continuous electrochemically suppressed ion chromatography are disclosed. In preferred aspect of the invention, a chloromatography effluent comprising analyte ions and electrolyte is split into a first chromatography effluent flow stream and a second chromatography effluent flow stream. Electrolysis ions selected from the group consisting of hydronium ions and hydroxide ions are generated by the electrolysis of water. Electrolysis ions of the same charge as the electrolyte and the second chromatography effluent stream are flowed through a stationary phase thereby suppressing the electrolyte in the second chromatography effluent flow stream. The analyte ions are subsequently detected in the suppressed second chromatography effluent flow stream.

Suppressor for continuous electrochemically suppressed ion chromatography and method

Methods and devices for removing gas prior to detecting analyte ions are discolored. In one aspect of the invention, gas by-products from the suppression of the mobile phase are removed prior to detecting analyte ions at a detector. In another aspect, the amount of dissolved carbonic acid is reduced in a suppressed carbonate/bicarbonate mobile phase by removing carbon dioxide gas.

Ion chromatography apparatus and method for removing gas prior to sample detection

Growing community of inventors

Arlington Hts, IL, United States of America

James M Anderson, Jr