Liquid delivery device and chemical analysis apparatus using liquid delivery device
US9797870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2015 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Apr 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/347
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chemical analysis apparatus includes a liquid delivery device and a liquid discharge unit discharging delivered liquids, the liquid delivery device including: a first liquid delivery unit delivering a first liquid containing an analysis object; a second liquid delivery unit delivering a second liquid not containing an analysis object; a measurement unit measuring physical properties of the delivered first liquid; first and second liquid pools containing the delivered first liquid and second liquid; and a plurality of passive valves. The apparatus further includes: a first flow passage connecting the first liquid delivery unit and the liquid delivery device; a second flow passage connecting the measurement unit and the second liquid pool; a third flow passage connecting the second liquid delivery unit and the liquid discharge unit; a first air hole provided in the first liquid pool; and a second air hole provided in the second liquid pool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.