Base line correction method and apparatus
US4357668A · kind A · utility
32Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1980 |
| Grant date | Nov 2, 1982 |
| Priority date | — |
| Expiry date | Mar 4, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/084
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a solvent gradient liquid chromatography system, base line shift is compensated by operating the system in a calibrate cycle with a desired solvent gradient program while subtracting and recording in digital form correction factors sufficient to maintain a flat base line at timed intervals during the program, and then successively recalling said digital correction factors at corresponding time intervals during a run cycle with a test sample and converting the correction factors to analog form and subtracting the converted correction factors from the system output signal for base line correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.