ASTM D3078 Testing: Key Variables for Accurate Bubble Detection USP 1207 defines traditional testing methods (such as the bubble release test) as probabilistic testing methods. This is because traditional testing methods rely on visual inspection for evaluation, which is highly subjective and susceptible to environmental factors. Failure to effectively control these variables can lead to incorrect results. Accurately identifying and controlling these variables is key to improving the accuracy and compliance of traditional testing methods. Common Errors in the ASTM D3078 Test and Their Solutions 1. Trapped Air Air tends to accumulate in areas such as the side flaps, fin-shaped seals, and skirt edges of packaging. When the package is immersed in liquid for vacuum testing, this trapped air can form bubbles. If the operator lacks sufficient experience, this may be mistaken for a leak. Solution: Gently shake the test sample while evacuating the vacuum to eliminate the effects of trapped air.

2. Relying on Unverified Vacuum Levels Using the same vacuum level by default for leak testing different packaging formats. If the vacuum level is too high for the test sample, it can cause the packaging to expand excessively and rupture. If the vacuum level is too low for the test sample, it is difficult to establish an effective pressure differential, leading to incorrect test results. Solution: Parameters should be set according to the headspace volume and material properties of the specific packaging. 3. Ignoring Headspace Requirements Bubble discharge testing detects leaks by creating a...

must be mechanically secured above the sample to prevent it from floating. Understanding these risk factors ensures the accuracy of test results and safeguards product quality and safety. The Saicheng’s MFY-CM Leak Tester is strictly designed in accordance with ASTM D3078 and can provide you with compliance-compliant test data. For more information about the equipment, please contact Saicheng Instrument to obtain your customized solution.