This European Standard specifies the term Besatz (impurities) and the method for the determination of its components. The term Besatz is used as a parameter for certain quality aspects in maize (Zea mays L.) and sorghum (Sorghum bicolor L.). This method has been validated in an interlaboratory study via the analysis of samples containing natural amount of impurities, ranging from: 0,0 % to 2,7 % for broken grains; 0,2 % to 3,5 % for grains impurities; 0,5 % to 3,3 % for miscellaneous impurities; 1,8 % to 8,7 % for total impurities. For further information on the validation, see Annex D.