ASTM D4279
Standard Test Methods for Water Vapor Transmission of Shipping Containers—Constant and Cycle Methods
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About This Item
ASTM D4279 is the ASTM standard for evaluating water vapor transmission of shipping containers using constant and cycle methods. It helps describe how packaging or container systems respond to moisture movement over time, which can be important for product protection, shelf-life planning, and packaging performance review. By providing standardized test methods, this document supports more consistent comparisons between container designs and test results across quality control, procurement, and engineering workflows.
Overview of ASTM D4279
ASTM D4279, Standard Test Methods for Water Vapor Transmission of Shipping Containers—Constant and Cycle Methods, focuses on measuring how much water vapor passes through shipping containers under controlled conditions. The title indicates two approaches: constant conditions and cycle methods, allowing users to evaluate performance in different testing scenarios. As an ASTM standard, it gives a common technical framework for comparing materials or container constructions and for documenting moisture transmission behavior in a repeatable way.
Common use cases of ASTM D4279
This standard is commonly used when testing shipping containers intended to protect contents from humidity-related exposure during storage or transit. It may be applied in packaging development, material comparison, supplier qualification, and routine verification of container performance. ASTM D4279 is also useful in test laboratories and quality programs that need a consistent method for evaluating moisture barrier behavior under constant or cyclic conditions.
Benefits of using ASTM D4279
Using ASTM D4279 supports more consistent water vapor transmission testing and helps teams compare results with greater confidence. It can improve compliance efforts, strengthen product evaluation, and reduce uncertainty in packaging decisions. For procurement and quality control, the standard provides a clearer basis for specifications and acceptance criteria. In practice, that can help reduce the risk of moisture-related damage and improve confidence in shipping container performance.
- Water vapor transmission testing
- Constant and cycle methods
- Shipping container performance evaluation
- Quality control and comparison testing
- Moisture barrier assessment
- Publication Date: 2022-10-12
- Publisher: ASTM
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