ASTM F3039 outlines a systematic procedure for identifying and measuring leaks in non-porous packages or flexible barriers. Leakage from packaging can compromise the safety, freshness, and effectiveness of products, leading to potential health risks, economic losses, and environmental impacts. This standard test method contributes to maintaining the freshness of products and enhancing customer satisfaction across various industries. ASTM F3039 is a destructive and qualitative test method.
Leak detection in non-porous packaging is critical to meet regulatory requirements, adhere to industry standards, and deliver products that meet the highest quality and safety standards.
ASTM F3039 Test Method
The ASTM F3039 test method involves subjecting the non-porous packaging or flexible barrier to a controlled internal pressure. The test is conducted in the following steps:
| Specimen Setup | The specimen is filled with a gas (e.g., air or a specific gas mixture) or liquid dye solution, depending on the desired test method. The package is placed in a controlled pressure chamber, where internal pressure is gradually increased. |
| Leak Detection | The exterior of the package is exposed to the leak-detection medium. Any leaks in the packaging material cause the leak-detection medium to penetrate the package, visually indicating the leak location. |
Method A of this test method detects and locates a leak equal to or greater than a channel formed by a 50 µm (0.002 in.) wire in the edge seals of a nonporous package. A dye penetrant solution is applied locally to the seal edge to be tested for leaks. After contact with the dye penetrant for a minimum specified time, the package is visually inspected for dye penetration or, preferably, the seal edge is placed against an absorbent surface and the surface is then inspected for dye staining.
Method B defines a procedure to detect and locate a leak equal to or greater than 10 µm (0.00039 in) diameter in a nonporous flat sheet. The flat sheet is placed on an absorbent surface and then a dye penetrant is spread across the surface of the sheet, preferably using a small roller to apply pressure on the sheet to ensure adequate contact between the absorbent surface and the bottom surface of the test sample. The flat sheet is carefully removed and the absorbent surface is inspected for dye staining.
