Metal Detection Protocols and Practices

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Best Practices - Metal Detection


Best Practices - Metal Detection



When it comes to metal detection protocols and practices, you need to define every step. It’s the only way to ensure the safe product will get to a customer’s table. And it has to be safe for consumption or it’s just plain negligent. The customer has to come first. There’s no shortcut to integrity. Here’s a list of Best Practices and Typical Guidelines for handling your metal detector systems:


  • Supply training for maintenance and cleaning staff in metal detector basics.
  • Plan and control your maintenance schedule, ideally during non-production hours.
  • Plan regular inspection of your production lines for identification of potential contaminants.  Pay particular attention to Critical Control Points (CCP).
  • Utilize good housekeeping practices throughout the plant.
  • Identify your “standards.” You need to know what you can achieve and how to get the most out of your detectors.
  • Re-evaluate standards whenever the conditions change whether in supplier controls or changes in product or on the line.
  • Maintain and safely store all documentation and records. If you don’t know where you’ve been you’ll never advance.
  • Maximize sensitivity without compromising performance. Implement security levels, protocols and passwords.  Ensure that only qualified personnel have access to secure information.
  • Document and communicate all testing. Identify how tests are performed, who is responsible and why.
  • Always use certified metal detection test pieces from a reliable source.  Use an ISO certified source.
  • Establish the frequency for testing and maintain it. Ensure that all responsible parties understand the need for integrity in test and are held accountable.
  • Create test packs where relevant and appropriate.
Reject Product Handling
  • Isolate and re-screen potentially contaminated product on test failure. Never let product with suspected contaminant leave the plant.
  • Investigate the source of the contaminant. Use trained personnel, offline and as quickly as possible or within reasonable time
  • On repeat (consecutive) detection issues, identify the source of the contaminant.
  • On multiple detections, stop production.
Record Keeping
  • Record commissioning and sensitivity details.
  • Store test results where qualified quality control personnel can access.
  • Keep shift results, including the number of rejects and action taken.
  • Document maintenance schedules and who performed the procedures.
  • Maintain training documentation for all personnel.

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