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Food producers have a great interest in extending the minimum shelf life of their products, to satisfy consumer demands and cope with long transport routes. Flexible and MAP packaging plays a decisive role in this context as one of its purposes is to shield the product from harmful external influences. A key criterion is the leak tightness of the packaging, as it has a significant impact on whether the products will prematurely deteriorate or even spoil. With the mandatory indication of a minimum durability date (MDD) companies are under an obligation to their customers – they must be able to rely absolutely on their packaging as well as the results of corresponding leak detection tests. Innovative testing technology such as the pressure rise method can achieve this. Inside the flexible membrane chamber, the pressure rise method reliably detects both ultra-fine and gross leaks quickly and easily.