In order to maintain the sterility of a packaged product until it reaches its point of end use, Manufacturers must demonstrate that, under the rigors of distribution, storage, handling, and aging, the sterile package integrity is maintained at least for the claimed shelf life of the food or medical device or product. The growth of these barrier packages and retort pouch use is a powerful driving force behind the need to define, standardize and institute critical package integrity tests.
A number of physical tests are commonly used for Packages integrity, including:
- Visual inspection method - "eyeballing" the pouch for problem
- Internal pressure method (bubble testing)
- Vacuum leak method, in which the package is submerged in water inside a vacuum chamber and escaping bubbles are observed
- Trace gas detection, where the package is pressurized with a gas other than air and then examined for escaping gas with a gas leak detector.
- Pressure (or vacuum) decay test, which is accomplished by pressurizing the package to a fixed pressure, shutting off the pressure and connecting a pressure transducer.
Vacuum Leak method Tester and Pressure Decay test are often used to perform package integrity (leak) testing on flexible pouches or other packages that have non-porous material surfaces and seals. These methods are highly recommended as it is affordable, sensitive, repeatable and quantitative.
More information about package Integrity Testing and relative testing instruments? please feel free to contact us or ask our package testing expert for your further package integrity testing projects.( Labthinkchina@gmail.com)
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