How MRLs calculated?
Where there is an approved use of the compound on a particular crop, or pesticide residues on imported produce (‘import tolerances’), the MRL is generally set at a value determined from field trials (i.e. where the crop has been treated with the pesticide and samples of the crop have been analyzed to determine residue levels). MRLs can typically be less than a milligram (mg) of pesticide residue in a kilogram of food (1mg/kg or less than one in a million) up to 5 mg/kg.
