Testing the integrity of liquid containing hermetically sealed containers by the use of radioactive markers
US4267449A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1979 |
| Grant date | May 12, 1981 |
| Priority date | — |
| Expiry date | Aug 14, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/226
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting leaky ampules filled with a liquid such as a parenteral solution. The ampules to be tested are immersed in a solution containing a short-lived radionuclide, and a pressure differential is imposed between the solution containing the radionuclide and the parenteral solution or other liquid contained in the ampules. The ampules are then removed from solution, decontaminated to remove any solution adhering to the outer surface and pores thereof, dried, and finally examined for electromagnetic radiation, preferably gamma radiation, emanating from the interior of the ampules which would indicate a leaky condition thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.