In December 2025, a frozen meatball manufacturer in New York recalled over 9,400 pounds of product after consumers reported finding metal fragments. Two months later, a chicken fried rice producer pulled 3.37 million pounds off shelves for glass contamination. These aren't edge cases—foreign material was the number one cause of USDA food recalls in 2025, triggering 13 out of 42 total recalls and affecting over 71 million pounds of product. Every one of those recalls traces back to the same root failure: a metal detector inspection process that either wasn't followed, wasn't documented, or wasn't thorough enough to catch the gap before product shipped. Sign up for Oxmaint to digitise your metal detector inspections and build the audit trail that prevents recalls.
Food Manufacturing Metal Detector Daily Inspection Checklist
Your metal detector is the last line of defence before contaminated product leaves your facility. But the detector itself is only as reliable as the inspection routine behind it. This checklist covers every verification point that HACCP auditors, BRC assessors, and SQF certifiers expect to see documented—every shift, every day.
Why a Missed Inspection Costs Millions
A metal detector that hasn't been verified today is a metal detector you can't trust today. When auditors or inspectors arrive, they don't ask if your detector is installed—they ask for timestamped proof it was tested, calibrated, and functioning at every required interval.
When to Inspect: Required Frequencies
Different checks require different frequencies. This schedule aligns with HACCP best practices and auditor expectations for critical control point equipment. Missing even one interval creates a documentation gap that auditors will flag.
The Complete Daily Inspection Checklist
This checklist covers every verification point that HACCP, BRC (Issue 9), SQF, and FSMA auditors expect to see documented. Each step maps directly to compliance requirements. Sign up for Oxmaint to run this as a recurring digital checklist with photo capture and auto-timestamped records.
Test Piece Position Guide
Auditors verify that test pieces are passed at three positions across the aperture—not just the centre. This catches edge-zone sensitivity gaps that a single centre test would miss. Each metal type must be tested at all three positions.
Which Standards Require What
Different audit schemes have overlapping but distinct requirements. This matrix shows which checklist elements each standard specifically mandates. Book a demo to see how Oxmaint maps your inspections directly to audit requirements.
Paper Logs vs. Digital CMMS Checklists
The inspection itself is only half the battle. How you record, store, and retrieve those records determines whether you pass or fail an audit. Sign up for Oxmaint to eliminate paper trail gaps permanently.
When a Test Fails: Corrective Action Flow
A failed test piece doesn't mean disaster—it means your system is working. But what you do next determines whether you maintain compliance or create a recordable deviation. Follow this corrective action sequence.
No product passes the detector until the issue is resolved. This is non-negotiable under HACCP.
Quarantine everything produced between now and the last documented passing verification.
Recalibrate, adjust sensitivity, repair reject mechanism, or replace detector components as needed.
Full 9-pass verification must succeed before the line restarts. Document every result.
Every quarantined unit must pass through the verified detector before release.
Record the failure, cause, corrective action, re-test results, and disposition of held product.
Frequently Asked Questions
Your Detector Is Only as Good as Your Documentation
Foreign material recalls are preventable. Every one traces back to an inspection that wasn't done, wasn't documented, or wasn't acted on. Oxmaint makes sure none of those gaps exist in your facility—every shift, every day, every line.
