Use of a mass spectrometer with secondary ionization for the inspection of containers
US5523565A · kind A · utility
3Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1994 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Sep 12, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/15
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Inspection of PET bottles for contamination is performed with a mass spectrometer in which the gas sample is ionized by an ionized primary gas. This causes greatly reduced fragmentation, or unambiguous fragmentation, of the gas sample. As a consequence, the spectrum obtained is very meaningful on its own, and can be interpreted very rapidly, which is an essential prerequisite for the use of mass spectrometers in industrial inspection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.