Patent · US Expired

Test carrier for the determination of ions

US5302346A · kind A · utility

6Cited by

7References

23Claims

0Family size

Assignee

Boehringer Mannheim GmbH · DE

Inventors

Peter Vogel · Diepersdorf, DE
Detlef Thym · Mannheim, DE
Michael Fritz · Biblis, DE
Dan Mosoiu · Schifferstadt, DE

Key dates

Filing date	Mar 8, 1993
Grant date	Apr 12, 1994
Priority date	—
Expiry date	Mar 8, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S435/805
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A test carrier for the determination of ions containing a test layer which has a liquid-resistant, organic phase which contains a hydrophobic polymer in a homogeneous mixture with a hydrophobic, organic liquid of low volatility and an ionophore, as well as a substance which changes its colour in the presence of the ion to be determined. The test carrier is characterized in that the test layer contains particles with an oil number of 80-200 and the ionophore is homogeneously dispersed in the hydrophobic, organic phase. A second test layer contains a buffer capable of maintaining the pH therein at a value of between 5-10.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.