When Should You Use a Vacuum Decay Test Vacuum decay testing is currently the most widely used method for leak detection. Compared to traditional leak detection methods, it provides quantitative data and is non-destructive; however, this does not mean it is always the best choice. So, when is vacuum decay testing most appropriate? Understanding the Principle of Vacuum Decay Testing The principle of vacuum decay testing involves placing a sample in a controlled test chamber, evacuating the chamber to a preset vacuum level, and then monitoring pressure changes within the chamber using a

pressure sensor. If a leak exists, gas from the packaging will escape into the test chamber, causing the pressure to rise. When Is It the Best Choice? Although vacuum decay testing is currently widely used, it is the best choice only when the following requirements are met: 1. Detection of Minute Leaks If industry regulations require the detection of minute leaks, vacuum decay testing must be used. Traditional leak detection methods are unable to detect such minute leaks, making vacuum decay testing necessary to ensure industry compliance. 2. Non-destructive Testing Requirements If your product...

The most common packaging types for vacuum decay testing are as follows: • Pharmaceutical packaging (vials, ampoules, syringes) • Medical device packaging • Flexible food packaging with headspace • Sealed containers requiring barrier integrity Vacuum decay testing is not a universal solution and is not universally applicable; it is not suitable in the following situations: • Porous materials • Packaging without headspace • Packaging that is very soft and deforms significantly under vacuum In these cases, vacuum decay testing is not suitable. The appropriate testing method should be selected based...

To learn more about the principles and applications, please refer to this article: Vacuum Decay Test: Principles, Applications, and When to Use It