Upper limits
The graph shows the maximum dose allowed in the European Community for different radioactive elements in three different food categories. The limits are given in terms of activity (becquerels) per kilogram. The more radiotoxic the radioelement is (the most dangerous being alpha emitters such as plutonium), the weaker the activity has to be. This is especially true in the case of baby food, where limits are particularly strict. When it comes to food which is consumed in small quantities (under 10 kilograms a year), activities up to ten times greater than those shown above can be allowed.