Device for solid phase extraction and method for purifying samples prior to analysis

US6723236B2 · kind B2 · utility

Assignee

• Waters Investments Limited · US

Inventors

• Raymond P. Fisk · Norton, US
• Pamela C. Iraneta · Watertown, US
• Yuri Tuvim · Newton, US
• Edouard S. P. Bouvier · Stow, US
• Jonathan Belanger · Northbridge, US
• Martin Gilar · Franklin, US

Key dates

• Filing date: Mar 19, 2002
• Grant date: Apr 20, 2004
• Expiry date: Mar 19, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/255
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter, and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.