Apparatus for monitoring chemical reactions and employing moving photometer means
US4234539A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1979 |
| Grant date | Nov 18, 1980 |
| Priority date | — |
| Expiry date | Aug 23, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/253
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for measuring progressively the absorbance changes of a large number of aliquots from a plurality of different samples. The sample introduction, testing instructions, aliquot preparation, reagent dispensing, absorbance measuring and data recording all can be accomplished in a continuous mode of processing. Stat and batch operation also can be accomplished. The aliquots are in an array of cuvettes which is advanced slowly along a circular path. Photometer means, preferably having several photometric detectors, are mounted in fixed orientation on a common support that advances rapidly along a similar circular path, such that radiation passing through each of the cuvettes is monitored many times by a specific photometric detector by the time that that cuvette completes one circuit of its path. The photometric detectors can operate at several different wavelengths. Many different chemical reactions can be monitored at the same time. The radiant energy passing through each cuvette is received by the continuously moving photometer means, is converted electrically into a digitized value proportional to absorbance and is transmitted digitally from the moving assemblage of photome…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.