I found this blue disk in a sour cream chip bag. There was writing on it… 
Can you imagine what I felt when my son opened the bag and found this? 
I had no idea what it was, so I didn’t let him eat the chips. 
I posted this photo online, ran a poll, and here’s what I discovered: you absolutely need to know this. 
This disk passes through metal detectors and is used to check that they are properly detecting metal particles.It’s used to ensure that dangerous metal objects don’t end up in food products.
These test chips are commonly found in products like chips or cookies, which undergo rigorous quality control.
So don’t worry, it’s absolutely not dangerous: it’s part of the product safety process.
