Apparatus for measuring the transmission rate of volatile organic chemicals through a barrier material
US5265463A · kind A · utility
13Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 1992 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Jul 24, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for measuring the transmission rate of volatile organic chemicals through a barrier material, where a barrier material sample is clamped in a test cell so as to form a chamber on both sides of the material, with a temperature-controlled test gas conveyed into one chamber and a temperature-controlled carrier gas conveyed through the other chamber. The carrier gas is passed through a cryotrap where the organic chemicals are collected, and the carrier gas with collected chemicals is then burned in a flame ionization detector to measure the quantity of organic chemicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.