Mettler-Toledo Product Inspection has launched an advanced x-ray inspection technology, which will greatly enhance the ability to detect low-density contaminants in packaged food products. The new technology will help food manufacturers avoid product recalls, reduce unnecessary product waste costs and enhance product integrity and brand protection.
The Mettler-Toledo DXD and DXD+ dual energy detector technology is optimized for identifying foreign bodies such as calcified bone, low-mineral glass, rubber, and some plastics. These types of contaminants are traditionally hard to detect within the ‘cluttered’ or ‘noisy’ x-ray images generated by overlapping and multi-textured products such as packs of pasta, chicken breasts, sausages, and frozen potato-based goods.
Such applications are a perfect match for DXD and DXD+ advanced detector technology, in conjunction with intuitive new Mettler-Toledo advanced material discrimination software tools. The software helps to separate and remove the prominent material of the food product within the x-ray image, revealing the presence of any lower-density contaminants.
As a result of the accuracy and reliability of DXD and DXD+ detection, food manufacturers can be more confident that their products are safe for consumers, and that they will benefit from reduced false reject rates and product waste, helping to deliver a fast return on investment.
The performance of this technology has been shown in tests conducted by Mettler-Toledo, in which a range of different foreign bodies was hidden in 650g packs of chicken breasts. It must be noted that the test results are dependent on individual applications.
The advanced detector technology is available in two versions, giving customers two levels of dual-energy x-ray performance:
DXD: enhanced x-ray performance at a competitive price; can operate in the same environments as single energy solutions and can be used with line speeds typically up to 100 m/minute.
DXD+: premium detector technology for the most challenging applications; collects more data about the product being inspected, and advanced image analysis software provides clearer images with much higher resolution; DXD+ can be used with line speeds typically up to 45 m/minute.
“This is truly cutting-edge technology, that meets a real demand in the market for x-ray inspection capable of detecting low-density contaminants in a wide range of packaged food products,” said Gareth Jones, head of Engineering for Mettler-Toledo Product Inspection.
“DXD and DXD+ provide unprecedented levels of detection in the most challenging applications our customers face. The benefits are both economic and reputational: they can better protect the integrity of their products and their brand, while reducing cost and wastage through improved False Reject Rates and less product throwaway.”
DXD and DXD+ dual energy detectors can now be specified with new purchases of Mettler-Toledo X35 x-ray systems. Only a small amount of extra operator training is required due to automatic job set-up and the similarities between the Advanced Material Discrimination software and the ContamPlus software that is familiar to existing Mettler-Toledo x-ray users.
Mettler-Toledo is offering exclusive personalized consultations to prospective users of this latest technology either on a 1:1 basis at its Royston facility or virtually. The consultations will include live testing with customers’ actual products, as well as the opportunity to engage with leading experts in the x-ray inspection field.
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Naresh Khanna – 10 February 2025
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