Degassing device
US10041914B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2017 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Jun 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/342
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A degassing device 2 includes: a built-in absorbance measurement section 28 using an LED light source and measuring the intensity of light transmitted through a mobile phase passing through a flow cell; and a solenoid valve 26 switchable between two states with and without the mobile phase passed through a degassing tube 21. The passage-switching operation by the solenoid valve is performed so as to obtain detection signals of the transmitted light in the absorbance measurement section when the mobile phase drawn from a mobile phase container by a liquid-feeding pump 40 is passed through the degassing tube for degassing as well as when the mobile phase is not passed through the degassing tube for degassing. A signal processor 29 calculates the difference in absorbance based on those detection signals, estimates the degree of degassing based on that difference, and displays the result on a display unit 32.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.