Spectrophotometric method and apparatus
US7576855B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2006 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Jul 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/035
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a spectrophotometry for a spectral transmission measurement of an extremely small volume of sample solution. A sampler 15 is formed of a flat plate member formed with a sample-holding hole 152 which penetrates the flat plate member in its thickness direction and has a reverse truncated cone shape, and a target sample solution is dropped into the sample-holding hole 152 of the sampler 15 positioned approximately horizontally and held in the hole 152 based on a surface tension of the sample solution in the form of a droplet S. Then, a measurement light is emitted to the held droplet S from directly above. A transmitted light getting out of the droplet S downward is introduced to a diffraction grating 19 through a window plate 17 and a slit 18, and dispersed in a wavelength dependent manner. The resulting light with dispersed wavelength components is detected by a multichannel detector 20 approximately simultaneously.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.