ASTM D3078-02(2021)e1 serves as the standard test method for identifying gross leaks in flexible or semi-rigid packaging using bubble emission. The procedure involves submerging a sample in a vacuum chamber to detect escaping air bubbles, providing a qualitative pass/fail result. For a detailed explanation of the protocol, visit Sanatron .
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| Observation | Interpretation | |-------------|----------------| | Single bubble burst | Usually trapped air – ignore | | Steady small bubbles from seal edge | Pin-hole or channel leak | | Large bubbles from corner | Gross leak or open seal | | Bubbles from package surface only | Porous material (expected) | | Fogging or bubbles from water itself | Degassing – let water sit 30 min before test | | Bubbles only during vacuum rise | Temporary seal opening – report as leak | ASTM D3078-02(2021)e1 serves as the standard test method