Integral analytical element
US4050898A · kind A · utility
62Cited by
4References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Apr 26, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/525
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Analytical element for the detection of an agent under analysis, termed analyte, dissolved in an aqueous, proteinaceous liquid. The element has at least two superposed layers, the layers including a spreading layer and a reagent layer. The element can include a support material which is preferably radiation transmissive. To normalize transport of the analyte in and through the spreading layer, the spreading layer contains an effective amount of a surfactant, such as a non-ionic surfactant. Preferably, the amount of surfactant is between about 1% and about 15% by weight of solid contents in the spreading layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.