Exhaust gas collection system for supercritical fluid chromatography

US6558540B2 · kind B2 · utility

Assignee

• Berger Instruments, Inc. · US

Inventors

• Terry A. Berger · Newark, US
• Kimber D. Fogelman · Hockessin, US
• L. Thompson Staats, III · McKeesport, US
• Mark Nickerson · Landenberg, US
• Paul F. Bente, III · New Garden Township, US

Key dates

• Filing date: Jul 30, 2001
• Grant date: May 6, 2003
• Expiry date: Aug 19, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N30/82
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An efficient and safe method and apparatus for collecting exhaust gasses in an open-air sample collection container in a supercritical fluid chromatography system is claimed. The invention uses a vacuum force to evacuate the gaseous phase and vapors separated from liquid mobile phase in a sample collection device. The invention is portable to use on a series of collection containers, such as test tubes or wells in a titration place. Embodiments are claimed for capture of gasses and vapors either internally or externally to a collection container. The invention removes the gasses from the collection container that are then safely vented to a waste collector, thereby creating a safer environment for the laboratory and properly removing and disposing potentially hazardous chemicals instead of venting these chemicals into the environment.