Method and device for safely preserving aqueous field samples using acid or base
US5322800A · kind A · utility
6Cited by
16References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1993 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Aug 13, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention concerns a method and apparatus for collecting and preserving field water samples on site in which a salt solution, contained in a syringe by a rupturable thin film membrane, is injected through a strong acid or base ion exchange filter to produce a required amount of either nitric acid, sulfuric acid or sodium hydroxide for sample collection and preservation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.