Materials to detect and locate a leak greater than or equal to a channel formed by a 1929 µm wire in package edge seals formed between a transparent material and a porous sheet material, in the ASTM F15-50 standard published by the American Society for Testing and Materials (ASTM); and procedures are defined. During the test, a dye penetrant solution is applied locally to the seal edge to be tested for leaks. After a certain period of contact with the dye penetrant, the package is visually inspected for dye penetration.
Basically, this test method covers three paint application methods: injection, edge dipping and dropper. These test methods are designed for use on packages with edge seals formed between a transparent material and a porous sheet material. Test methods are limited to porous materials that can retain the dye penetrating solution and prevent discoloration of the seal area for at least 5 seconds. Uncoated papers are particularly susceptible to leakage and should be carefully evaluated for use with each test method.
These test methods require that the penetrating dye solution has good contrast with the opaque packaging material. For example, in medical packaging, harmful biological or particulate contaminants can enter the device through leaks. These leaks are often found in seals between packaging components of the same or different materials.
The dye solution used in the test method defined in ASTM F1929-15 will absorb any porous material over time, but this will not normally happen within the maximum recommended time. If wicking does occur, it can be verified by observing the porous side of the seal area in question. The paint discolors the surface of the material.
Experts disagree on the level of leakage that could be harmful to a particular package. However, the ASTM F1929-15 test method is designed to detect leakage only, and components that show any signs of leakage are generally rejected.
Our organization, with its trained and expert staff and advanced technological equipment, among the numerous test, measurement, analysis and evaluation studies it has given for businesses in various sectors, within the scope of the F1929-15 standard. It also provides standard testing services for the detection of leaks in porous medical packages by dye penetration.
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