How Many Leak Test Methods for Food Packaging

There are several leak test methods used to evaluate the integrity of food packaging.

These include pressure decay tests, vacuum decay tests, bubble emission tests, dye penetration tests, helium mass spectrometry tests, and hydrostatic tests.

Pressure decay tests measure the pressure of the package over a given period of time

Pressure decay tests are used to measure the pressure of a package over a given period of time. This test is used to detect any leaks in the package and any degradation of the package material. During the test, the package is sealed and a pressure differential is applied between the inside and outside of the package. If a leak is present, the pressure inside the package will decrease over time. The rate of pressure decay is then used to measure the size of the leak. Pressure decay tests are used to evaluate the integrity of a wide variety of food packages, including flexible pouches, rigid containers, and bottles.

A typical machine for this method is Cell Instruments LSST-01 Leak and Seal Strength Tester.

Vacuum decay tests measure the vacuum change around the package over a given period of time

Vacuum decay test is used to detect any leaks in the package and any degradation of the package material. During the test, the package is sealed and a vacuum is applied to the outside of the package. If a leak is present, the vacuum outside the package will decrease over time. Vacuum decay tests are used to evaluate the integrity of a wide variety of food packages, including flexible pouches, rigid containers, and bottles.

Cell Instruments MLT-01 micro leak tester complies with this method.

Bubble emission tests measure the amount of gas escaping from the package

This test is used to detect any leaks in the package and any degradation of the package material. During the test, the package is sealed and a pressure differential is applied between the inside and outside of the package. If a leak is present, gas will escape from the package and form bubbles. The size and number of bubbles are then used to measure the size of the leak. Bubble emission tests are used to evaluate the integrity of a wide variety of food packages, including flexible pouches, rigid containers, and bottles.

Cell Instruments has three bubble emission leak testers, which are LT-01, LT-02, LT-03 leak tester.

Dye penetration tests measure the amount of liquid leaking from the package

Dye penetration tests are used to measure the amount of liquid leaking from a package. This test is used to detect any leaks in the package and any degradation of the package material. During the test, a dye solution is applied to the package, and the amount of dye that penetrates the package is then measured. The amount of dye that penetrates the package is then used to measure the size of the leak.

The LT series leak tester can be used for this application too.

Other method such as helium mass spectrometry test can also be used to check leakage.