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Are Slice Ceramic Safety Blades Metal Detectable?

The food and pharmaceutical manufacturing industries require metal detectable knives. This is a safety precaution, in case small chips break off a blade into the product during production. At the end of the manufacturing process, metal detectors scan the finished product to ensure its safety. For this reason, food and pharmaceutical manufacturers often ask us: are Slice ceramic safety blades metal detectable?

The answer is no, they’re not. Here’s why.

Slice ceramic safety blades are made from 100 percent pure zirconium oxide. This advanced ceramic material, which is much harder than steel, must be fired at a temperature of 1400 degrees Celsius in order to solidify into a useful blade. The firing process burns off everything except the zirconium oxide, so any steel—even steel designed to withstand high temperatures—would burn off.

Mixing additional elements with zirconium oxide also weakens its composition and diminishes its benefits, which include that it is:

  • Non-conductive
  • Non-magnetic
  • Anti-static
  • Non-sparking
  • Safe up to 1600 degrees Celsius
  • Chemically inert
  • Unable to rust
  • Non-porous

As the old saying goes, if it ain’t broke, don’t fix it. Our customers love the benefits of pure zirconium oxide and our proprietary safety grind.

Many food and pharma manufacturers do benefit from Slice’s ceramic safety blades in their wider processes, such as shipping and receiving, but our blades can’t be used directly on any product that requires metal-detectable blades.

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