Vacuum decay is a method that is used for closed container integrity (CCI) determination for high risk package applications with fast, repeatable, and reliable test results that provide quantitative and deterministic quality assurance. This technology can be used on a wide variety of package formats, product classes and product combinations. Packaging can be non-destructively evaluated using the VeriPac inspection method which is based on vacuum decay technology. PTI’s VeriPac vacuum decay technology is capable of detecting package leaks and invisible defects using a differential pressure transducer leak test system. The method is non-invasive, non-subjective and requires no sample preparation.