A method of testing a product for leaks includes applying to the product a reference pressure that is less than 50.6 KPa. The method also includes developing a gas flow through a leak detection sensor in response to applying the reference pressure to the product. Another step of the method includes determining,...http://www.google.com.au/patents/US6854318?utm_source=gb-gplus-sharePatent US6854318 - Method and apparatus of nondestructive testing a sealed product for leaks
