Integral fitting and filter of an analytical chemical instrument
US5525303A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1995 |
| Grant date | Jun 11, 1996 |
| Priority date | — |
| Expiry date | Apr 4, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/143
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integral fitting and filter assembly (10) includes a tubular body (12) having a integral proximal fitting end (14) and an integral distal fitting end (16). A central passage (18) extends from the proximal fitting end to the distal fitting end of the body. A tubular sleeve (20) is slidably received within the central passage of the body. The tubular sleeve includes a stem portion (22) and a larger diameter head portion (24). The stem portion of the sleeve is packed with a selective chemical-absorbent packing material (26), that is retained within the sleeve by first and second porous plugs (28) secured within opposite ends of the stem portion of the sleeve. The sleeve is slidably inserted into the body, and is adjustably positioned longitudinally to provide a pre-column filter that may be used to mate with differently configured mating fittings, such as high-performance liquid chromatography instrument inlet fittings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.