MATERIALS HANDLING


COMBATTING CONTAMINANTS


Mike Pipe from Mettler-Toledo explains how using dual energy x-ray detection can improve processes for food manufacturers


T


he detection of foreign body contaminants is part of the critical quality assurance process to improve food


safety standards. X-ray inspection has long been a key technology in this process, but there are different types of x-ray detection that food manufacturers can use, depending upon the nature of the application.


DUAL ENERGY X-RAY DETECTORS Traditionally, manufacturers have used single energy x-ray detectors, but dual energy technology is increasingly commonplace, since it is more powerful, effective, and easy to use than it once was. The technology works using the concept of ‘material discrimination’, with dual x-ray beams of different energy able to identify materials of different densities. Advances in detection sensitivity mean that dual energy x-ray is now even more discerning, allowing ever- smaller contaminants to be detected in a wider range of applications. But what are the applications


in which dual energy x-ray excels compared with the more


Mettler-Toledo’s dual energy x-ray system finds more contaminants than single energy x-ray systems


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