Sampling high purity water for trace ion determination
US4476712A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1979 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Aug 6, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus is disclosed for collecting and concentrating trace ions from a pressurized aqueous sample in a sample line. A three-way valve is connected to the sample line which in one position can divert the sample into a syringe and in another position can close off the sample line and permit the sample to flow from the syringe through the three-way valve into a concentrator column. In an alternative apparatus, the sample line is connected to a tee which permits the diversion of the sample into a concentrator column connected to the tee. The other end of the concentrator column is joined to a syringe for drawing the sample through the concentrator column. Methods of operating the apparatus are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.