Metal detection today remains the backbone of food safety compliance for the majority of the industry, but especially in the chilled and frozen food sector. Specifically, simultaneous multi-frequency scanning is making it much easier for manufacturers to identify hard-to-find metals in food products with high conductivity (so-called "wet" products). These products may, literally, have high water content. Additionally, above-average conductivity may also be linked to high levels of minerals, particularly salt. These can be found in products such as bacon, or ready meals.
For years, this type of product effect has posed a challenge for North American producers of meat, dairy, ready meals and baked goods, but also for some less obvious categories such as fortified (iron enriched) breakfast cereals and dietary supplements with high levels of added minerals.