The US FDA thinks 1000 Bq/kg for Cs-137 is just fine.[1] Browsing around, I have seen other sources that go higher. I am not knowledgeable enough to know if o

The US FDA thinks 1000 Bq/kg for Cs-137 is just fine.[1] Browsing around, I have seen other sources that go higher. I am not knowledgeable enough to know if one or both of those limits is overly conservative. Considering my experience with other food safety limits, I would say they probably are. [1] http://www.fda.gov/ICECI/ComplianceManuals/CompliancePolicyGuidanceManual/UCM074576 http://www.fda.gov/ICECI/ComplianceManuals/CompliancePolicyG...