Foreign bodies that X-rays and metal detectors fail to detect are detected by inspection with microwave technology. Plastic, glass, wood, bones, rubber, insects, and all metals, regardless of their size or composition, are from now on detectable.

The detection principle of microwave technology is completely innovative and is based on the difference in dielectric contrast between product and contaminant and not on the difference in density. The inspection works through antennas placed around the container, able to penetrate the product in all its parts, detecting the presence of physical contaminants reliably and accurately.

The technology is applicable at full speed line thanks because the inspection is carried out in a few tens of ms and provides information on the type of contaminant and the location. The power used for the inspection is very low (1 mW), safe for operators and the working environment and does not heat the product.