Canadian Packaging

Mettler-Toledo provides Signature Touch mushroom safety

By Canadian Packaging staff   

Food Safety Metal Detection Dole mushrooms Mettler-Toledo Inc Mettler-Toledo Safeline metal detction system Oakshire Mushroom Farm Oakshire mushrooms

Oakshire Farms cultivates mushroom quality with Signature Touch metal detection system from Mettler-Toledo Safeline.

Oakshire Mushroom Farm of Kennett Square, Penn., is an award-winning innovator and patent holder in the mushroom industry. In business for more than 31 years, the fungi producer develops, grows and packs their own Oakshire branded products as well as Dole mushrooms, as the exclusive licensee in North America.

When Oakshire needed a new metal detector in 2015 to accommodate rising demand, it  turned to Mettler-Toledo Safeline and selected a Signature Touch to maximize food safety and final product quality.

“Before purchasing our first metal detectors, we went to trade shows and considered four different suppliers. Mettler-Toledo Safeline stood out, so we bought three of their systems,” says Oakshire director of operations Stephen Anania. “Last year, we needed another one and decided to stay with Mettler-Toledo because of the great equipment reliability and customer service. Our sales rep, Dick DeNenno from Reliant Packaging Systems, guided us through the purchase process and helped us identify the best system for our current and future needs.”

Adds Oakshire maintenance manager Steven Lathe: “We love our Signature Touch for its impressive detection sensitivity and ease of use. From a maintenance perspective, I never have to think about this metal detector – it just runs and runs and runs.

“Installation was so easy, we did it ourselves. Just put it in place, level it and plug it in.”

He continues: “Mushrooms are grown in wooden beds held together with nails and screws, so metal detection is a crucial part of our process,” explained Lathe. “It’s extremely important that none of that metal gets mixed in with the product and goes out the door.”

Safeline metal detectors find ferrous and non-ferrous tramp metal, as well as the most difficult to detect non-magnetic stainless steel fragments and non-spherical fine wire fragments.

With high frequency advanced coil technology and dynamic filtering techniques, these systems maximize detection sensitivity and stability.

“We check the performance of our metal detectors every hour by running test strips through,” adds Oakshire quality control manager Mike Morrison. “The sensitivity on the Signature Touch is the best we’ve ever seen.”

Lathe notes: “Mushrooms can challenge detection technology with their changing moisture content and density, which vary from batch to batch as well as from one mushroom type and size to another.

“Our new metal detector works equally well for all our mushrooms and handles most product variations without requiring adjustments.”

Oakshire processes a variety of mushroom types, with changeovers occurring as often as four times per line per shift, depending on the season.

The aperture on the Signature Touch at Oakshire is unusually large, allowing it to accommodate a wide assortment of package sizes. With an opening 20 inches wide and nine inches high, it can inspect lugs of incoming product as well as the final product quality of retail-sized tills and 10-lb. bulk packages for foodservice customers.

“We pack hundreds of thousands of pounds per week and distribute throughout the U.S. Because we’ve licensed the Dole brand, we can go to our customers with a nice value proposition, offering both the Oakshire brand and a national brand,” says Oakshire product manager Quintin Schroeder. “We’ve been growing very aggressively year after year.”

Summing up, Morrison adds: “Product safety is our most important objective. That’s why we rely so much on our metal detectors.

“The Signature Touch is a huge part of how we ensure we’re putting out the high quality mushrooms that Oakshire is known for.”

About Mettler-Toledo Safeline
Mettler-Toledo Safeline is a wholly-owned subsidiary of Mettler-Toledo Inc., a global supplier of precision instruments with sales and service locations in 37 countries. The Mettler-Toledo Product Inspection Division is an industry leader and innovator in the field of automated product inspection solutions with vision inspection, checkweighers, track-and-trace systems, metal detectors and X-Ray inspection systems. Industries including food, pharmaceutical, nutraceutical, chemical and personal care use our solutions to continuously improve the quality of their products and improve the efficiency of their manufacturing and packaging processes. More information available at


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