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#1 Rich14


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Posted 15 May 2019 - 04:49 PM

We are looking into purchasing a second metal detector and in the SQF code it reads "The equipment shall be designed to isolate defective product and indicate when it is rejected." 


Does anyone have experience using a detector that doesn't "isolate" but rather just alerts a user to detection but doesn't reject the product?  The rule seems pretty cut and dry, but figured it was worth a post to ask of others experiences. 

#2 The Food Scientist

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Posted 15 May 2019 - 04:57 PM

Some detectors come with a blowing elimination device that gets rid of the product once it fails through the metal detector. In my previous experiences we never had one like that. Just the detector buzzing or beeping and stopping the belt from moving whenever metal is detected. SQF Auditors were okay with it. Just make sure the employees on those lines are fully trained on what, how and corrective action when it comes to metal detection

Everything in food is science. The only subjective part is when you eat it. - Alton Brown.

#3 SQFconsultant



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Posted 15 May 2019 - 08:38 PM

The rule is pretty cut and dry - however the term "isolate" can mean a couple of different things, all of which acceptable --- belt stop for that item where the other items continue onward, push off to side cutout or bin or drop down box to surround the item. Saw a really cool one that automatically put up two plastic guards that popped up out of the conveyer to reveal the offender and then there is the conveyor that opens up and the item drops into a waiting bin.

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#4 Sweet_Lew


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Posted 15 May 2019 - 09:20 PM

The metal detection programs I like using are ones where the belts feeding into and out of the metal detector are stopped when metal is detected. This will "isolate" and is a basic electrical signal wired into the belt system and will work with most metal detector models.

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