This paper explains how the limit values were arrive at. In short, the rule is to assume that the contaminated food is the only source of food for the most sens

This paper explains how the limit values were arrive at. In short, the rule is to assume that the contaminated food is the only source of food for the most sensitive ones (children). That's why the limits seem to be very strict. http://www.fao.org/3/U5900T/U5900T08.htm http://www.fao.org/3/U5900T/U5900T08.htm