Hi Jfox,
Here are some 'magic' numbers you can start with...
The numbers are from a voluntary standard available for 'final magnets' - that is, magnets that are the last point at which a ferrous contaminant could be removed from a finished product (sometimes a CCP). It says the magnet(s) should be a continuous type (ie not electromagnets) and should be a strength of 10000 Gauss. Magnets that are used earlier in the process or that are not CCPs can be weaker. You will want at least 85% of your product stream passing within 10 mm of the magnet(s). The cleaning frequency is important ,especially in viscous products like yours, so look for magnetic equipment which allow fast and easy access to the magnetic parts so that you can monitor and clean off contaminants easily.
You can purchase a copy of the standard from haccp-international.com.
Regards,
Karen Constable
Food Fraud Prevention (VACCP) Programs | Food Fraud Training |
Consulting | Advisory | Compliance
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