Emerald Group Publishing Limited
Copyright © 2000, MCB UP Limited
Keywords: Probes, Sensors, Polymers
Applicant: Dystar Textilfarben GmbH & Co. (DE)Patent number: US5926269Publication date: 20 July 1999Title: Optical probe with sensor made of optical polymer
The invention relates to an ATR spectrometer containing an optical probe having a sensor made of transparent material and a feed line and an exit line for light, wherein the sensor contains an optical polymer or a mixture of different optical polymers. The probe of the spectrometer, according to the invention, essentially has the advantages that it is inexpensive and extremely flexible, and that it can be matched to the concentration range of the solution to be examined, which makes it possible to fill the gaps in terms of measurable concentrations between conventional transmission spectroscopy and prior ATR spectroscopy. The spectrometer is claimed to be outstandingly suitable for methods of analysing liquid media which may or may not contain a solid, in particular dyestuff solutions. It is also particularly suitable for the analysis of blood, since the sensor is employed sterilized and after use can be disposed of without entailing great expense. The optical (transparent) polymer may be present as an essentially pure material, but may also be a mixture of different optical polymers.