ASTM D3078
Bubble Emission Leak Testing
Standard Test Method for Determination of Leaks in Flexible Packaging
by Bubble Emission
Background
A leak test analyzes packages for leaks, whether through material defects (holes) or channels at seals. During this test, the package is placed within an enclosed chamber and submerged under water. A vacuum is pulled on the chamber, causing the package to expand and pressurize. The sample is then observed for bubbles leaking out of the package. Anecdotally, bubble leaks are often observed with a 100u or larger hole size. If better sensitivity is needed, then ASTM F2095 would be more appropriate.
Where Used
This method is used in quality control to verify package integrity. This method is considered good for characterizing gross leaks in packages that contain some level of headspace gas.
Description
- The sample is placed in the chamber
- A controlled vacuum is applied
- The technician observes
for bubbles coming from the sample
- Please visit the ASTM website
for more details on ASTM D3078.
Related Instrument
The Dansensor LeakPointer H2O was engineered for ease of use and has the following features: ergonomically designed for operator safety and convenience, mounted pneumatic lid – opens/closes effortlessly with no messy dripping, an adjustable vacuum range from -50 to -800 mbar, fast (<1 min) vacuum generation with compressed air (no electrical connection or external vacuum pumps required), easy-to-clean tub with a drain line that can be orientated in front or back of the instrument.
Note
For challenging packages that have little or no headspace, the LeakPointer H2O has a “balance hose” option that allows
room air to fill the backage, while under test.
Download the ASTM D3078 Note