Astm D3078 Pdf ((top))

The principle is simple but effective: A sealed package is submerged in a liquid (usually water or a surfactant solution) while a vacuum is applied. If the package has a leak (e.g., a weak seal seam or a pinhole), the pressure differential forces air out of the package, creating a steady stream of bubbles in the liquid.

The primary goal of this test is to identify large ("gross") leaks in flexible or semi-rigid packages that contain a . By placing a package under vacuum while submerged, any internal air escaping through a defect will form visible bubbles, pinpointing the exact location of the leak. Step-by-Step Test Procedure astm d3078 pdf