Apparatus and method for sampling and IR-spectroscopic analysis of high-purity, hygroscopic liquids

US6142024A · kind A · utility

Assignee

• Huls Aktiengesellschaft · DE

Inventors

• Hartwig Rauleder · Rheinfelden (Baden), DE
• Klaus-Dieter Krieger · Rheinfelden (Baden), DE
• Lothar Zehe · Rheinfelden (Baden), DE

Key dates

• Filing date: Oct 23, 1998
• Grant date: Nov 7, 2000
• Expiry date: Oct 23, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N21/3577
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus and method for the sampling and quantitative, IR-spectroscopic determination of impurities in hygroscopic liquids. The apparatus includes a stainless steel tube having a straight bore, a first end, and a second end. A first flange attachment is located at the first end of the stainless steel tube, and a second flange attachment is located at the second end of the stainless steel tube. First and second calcium fluoride plates are also located at the first and second ends of the steel tube, respectively. The first and second plates are oriented parallel to each other and perpendicular to the axis of the stainless steel tube. First and second outer flanges hold respective of the first and second plates in place at the first and second ends of the tube, respectively, and the first and second outer flanges are mechanically fixed to the first and second flange attachments, respectively. At least one seal separates the first plate from the first flange attachment and the first outer flange. Similarly, at least one seal separates the second plate from the second flange attachment and the second outer flange. First and second three-way taps are coupled by a first stainless stee…