Combustion tube
US3957441A · kind A · utility
Inventor
Key dates
| Filing date | Dec 10, 1973 |
| Grant date | May 18, 1976 |
| Priority date | — |
| Expiry date | Dec 10, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N31/12
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A combustion tube for preparing samples for analysis of pollution materials, such as mercury and lead, or isotopes such as tritium and carbon 14, having at least one group of oxygen-supplying tubes disposed downstream in the tube relative to an organic sample and the direction of the oxygen flow. The combustion tube is surrounded by coiled heating wire to heat the interior of the tube to cause combustion of the sample. A gas inlet is provided upstream of the sample for the injection of oxygen, nitrogen, or the like, and a gas outlet is provided at the extreme downstream end of the tube for the exhaustion of gases contained in the tube. Complete combustion of the sample is assured by providing capillary apertures in the oxygen-supplying tubes for the oxygen to exit therefrom in a fine stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.