FAQ: Detection Capabilities

FAQ: Detection Capabilities

of X-ray Inspection

What kinds of contaminants can X-ray detect?

X-ray inspection is based on the characteristics of the food product and the foreign object, which enables the detection of various foreign materials, e.g. metals, glass, Stone detection in food, and dense plastics, but also makes it possible to detect quality defects such as missing or lacking content.

The basic principle is to create a recipe for each product type by teaching the good-quality product to the X-ray system. The system then takes an image of each product and compares it to the product recipe to detect materials that absorb more X-rays than the good-quality food product.

The recipe allows natural variation between the production batches but detects and automatically rejects every product that contains hazardous foreign objects or unwanted quality defects. It is important to finetune the recipe and system sensitivity to minimize false rejections and ensure that the smallest foreign objects are detected easily.

The exact detection capabilities are defined in the X-ray Application & Performance test.

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Can X-ray detect metal objects inside a metalized packaging?

Because X-ray inspection is based on the characteristics of the food product and possible foreign bodies, rather than the magnetic or conductive properties of the foreign materials, it is possible to detect metallic objects even when the packaging is metalized.

This is why X-ray gives food producers the freedom to change their packaging type or material, e.g. to metalized film in order to extend the shelf life of the products, without the need to completely update their Critical Control Points.


Read More about Inspecting Metalized Film Packaging
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