An apparatus and method for testing the integrity of packaging using vacuum. The apparatus consists of tank with an interior chamber, a lid operable to allow placement of a package into the interior chamber, a hold down plate attached to the lid, a measuring device configured to measure the size of the package, and a vacuum device configured to apply vacuum to the interior chamber of the vacuum chamber. During testing the package is submerged in a liquid, then placed under vacuum until predetermined size is reached. Then the package is inspected for indications of leakage.