I was surprised when my son opened a bag of sour cream chips and found a small blue disk inside. At first, I had no idea what it was, so I didn’t let him eat the chips. Concerned, I took a photo and looked for answers.
What I discovered was unexpected. The blue disk is actually a test device used in food production. It is designed to pass through metal detectors so manufacturers can confirm their machines are working correctly.
These detectors are used to catch any metal fragments that could accidentally end up in food during processing. The blue test piece helps ensure that the system can detect even small contaminants.
