Quantitative transmission spectroscopy using sample carriers with nets

US5786226A · kind A · utility

Assignee

• Boehringer Mannheim GmbH · DE

Inventors

• Dirk Bocker · Heidelberg, DE
• Gerhard Werner · Weinheim, DE
• Hans-Peter Haar · Wiesloch, DE

Key dates

• Filing date: Mar 18, 1996
• Grant date: Jul 28, 1998
• Expiry date: Mar 18, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/0346
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Quantitative transmission spectroscopy where a sample liquid is applied onto a sample carrier having a net in such a manner that the liquid spreads across the meshes of the net. The liquid on the net is exposed to radiation essentially perpendicularly to the net, and the transmitted radiation is detected. The net accomplishes a dosing of the liquid in such a manner that identical meshes include identical quantities of liquid. For a given net, it is possible to derive the amount of liquid, which is located in a mesh and accessible to radiation, from a net constant. Knowing the amount of liquid detected by the radiation, it is possible to use the radiation absorption to calculate the concentration of one or several analytes contained in the sample liquid.