Why do manufacturers continue to rely on this standard alongside more expensive technologies like trace gas detection?
The new edition adds a non-mandatory appendix correlating bubble test results with vacuum decay measurements. This helps manufacturers transition from subjective bubble observation to automated electronic testing. astm d3078 pdf 2021
: Guaranteeing that your packaging protects sensitive products throughout their life cycle. Reliability Why do manufacturers continue to rely on this
| 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 pdf 2021
: A transparent vacuum chamber, vacuum pump, and immersion fluid (usually water). Primary Use