This European Standard specifies a gas chromatographic/mass spectrometric method for the determination of organochlorine pesticides (OCs) and polychlorinated biphenyls (PCBs) in animal feeding stuffs and oil. The method is applicable to animal feeding stuffs with a water content up to about 20 wt% and a fat content
up to about 10 wt% and oil/fatty samples containing residues of one or more of the following OCs and PCBs and some of their isomers and degradation products: Aldrin, Dieldrin, Chlordane (= sum of Chlordane isomers and Oxychlordane)etc..