Two-step calibration method for dry chemical analysis element
US5786223A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1996 |
| Grant date | Jul 28, 1998 |
| Priority date | — |
| Expiry date | May 17, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/115831
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The concentration of an analyte in a sample liquid is determined on the basis of the optical density of a chemical analysis element spotted with the sample liquid according to a standard curve representing the relation between the concentration and the optical density of the analysis element which is obtained when the concentration is measured using an analysis element of a first lot. A plurality of first standard liquids containing the analyte in known levels are spotted onto analysis elements of a second lot, the concentrations of the analyte in the first standard liquids are determined according to the standard curve and a first calibration curve for correcting the concentrations of the analyte is prepared. A plurality of second standard liquids containing the analyte in known levels are spotted onto analysis elements of the second lot, the concentrations of the analyte in the second standard liquids are determined according to the standard curve on the particular analysis system, the concentrations of the analyte in the second standard liquids thus determined are corrected according to the first calibration curve, and a second calibration curve for correcting the concentrations…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.