4 Types of Leak Detection in Food Packaging

It is very normal for consumers to not want to spend time in the grocery store checking food packaging for leaks. Unfortunately, any leaks in packages can contaminate the food and cause the person eating it to become sick. It is up to the manufacturer to utilize quality leak detection equipment that will help to check produced and packaged food for leaks so that they can ensure that consumers will be healthy and there will not be any problem with contamination or bacteria growth.

1. The Bubble Test

Both manufacturers and consumers can use the bubble test to check the quality of packaging and make sure that there are no leaks in the food. This is easy to do, as long as the package of food contains air. Try running water in a sink or bowl and ensure that is deep enough to fully submerge to package of food, it easy to tell if there are any bubbles that escape from the package. Any escaping bubbles are a clear sign that there are leaks in the packaging.

2. The Helium Sniff

Manufacturers can use a helium sniffer to detect leaks. This type of leak detection is incredibly beneficial because it will locate exactly where the leak is occurring so that the manufacturer can take steps to improve this area of the package and strengthen it to avoid future problems. In order to complete this task, pressurized helium has to be charged into the package itself and then a helium sniffer scans the service. The concentration of helium leaking into the air will be picked up by the stiffer to show a leak. Another type of helium test involves spraying the package with helium and then using a detector to monitor if the gas penetrates into the packaging.

3. Pressure Decay

When there is a leak in food packaging, the internal pressure of the package will slowly decrease. By monitoring the pressure level of the package and then checking the pressure at later times, it is easy to tell whether or not the pressure has changed. A reducing pressure is a clear sign that there is a leak. This type of leak detection is very popular not only because it’s incredibly easy to use and very reliable, but there’s very little room for bias, as there can be with other sources of leak detection.

4. Ultrasonic Measurement

One of the most advanced types of leak detection tests measures any sounds produced by leaks. Every leak in a package of food will produce a sound that is related to the size of the leak and will have a specific frequency. Smaller leaks will have higher frequencies and using an ultrasonic detector will make it easy to identify where this frequency is coming from inside of the package. This equipment is handheld and uses a meter, headphones, and an adjustment nozzle to identify the leak and locate it. As one of the more advanced types of equipment, this is not something that consumers will be able to test for themselves at home.