Colorimetric fluid analyzer
US3941487A · kind A · utility
26Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Oct 18, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/069
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light beam is passed through a cuvette, through which flows liquid to be analyzed optically for concentration of color reacted amino acids. The emergent beam is directed through a series of dichroic beam separators and pass band filters to produce three beams of substantially three different wavelengths. Photoelectric detectors produce electrical signals corresponding to each of the three wavelengths. Two of the signals are characteristic of the substance to be detected. The third is subtracted from the other two wavelength signals to produce a pair of output signals from which base line noise has been substantially eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.