Method and apparatus for testing hermetic seal integrity of sealed packages and containers, are provided. The method includes placing a sealed test package having at least one semi-flexible surface, within a test chamber. The pressure within the test chamber is changed from a first value to a second...http://www.google.com.au/patents/US4771630?utm_source=gb-gplus-sharePatent US4771630 - Method and apparatus for testing hermetic seal integrity of sealed packages and containers
