EN 15742:2020

Animal feeding stuffs: Methods of sampling and analysis - Determination of OCPs by GC-ECD EN 15742:2020

Publication date:   Aug 17, 2020

General information

60.60 Standard published   Mar 25, 2020


CEN/TC 327 Animal feeding stuffs - Methods of sampling and analysis

European Norm

65.120   Animal feeding stuffs



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This document specifies a gas chromatographic method with electron capture detection (ECD) for the determination of organochlorine pesticides (OCPs) in compound feeds and oil and fats.
The method is applicable to animal compound feed, oils and fats and fish meals with a water content up to about 20 % by weight and oil/fatty samples containing residues of one or more of the following OCPs, toxaphene and some of their isomers and degradation products:
— aldrin;
— dieldrin;
— dichlorodiphenyltrichloroethane (DDT) (the isomers op'-DDT, pp'-DDT, pp'-TDE (pp'-DDD), and pp'-DDE);
— endosulfan (as the sum of α-/β-isomers);
— endrin;
— hexachlorobenzene (HCB);
— hexachlorocyclohexane isomers α-HCH (α-BHC), β-HCH (β-BHC), γ-HCH (γ-BHC or lindane);
For the following OCPs, the method is considered a screening method. Additional in-house validation is required for reporting validated data.
— chlordane (as the sum of chlordane isomers and oxychlordane);
— endosulfan-sulphate;
— delta-keto-endrin;
— heptachlor (as the sum of heptachlor and heptachlor epoxide);
— photo-heptachlor;
— cis
— and trans-nonachlor.
A limit of quantification (LOQ) for the mentioned OCPs of 5 µg/kg is intended to be obtained. However, 10 µg/kg applies for heptachlor, aldrin, endrin, dieldrin, and endosulfan (α-/β– and sulphate). Individual laboratories are responsible for ensuring that the equipment that they use, achieves these limits of quantifications. The LOQs apply to the individual OCPs.

Related legislation

Legislation related to this standard


Regulation (EC) No 882/2004 of the European Parliament and of the Council of 29 April 2004 onofficial controls performed to ensure the verification of compliance with feed and food law, animal health and animal welfare rules

Life cycle


EN 15742:2009


EN 15742:2020
60.60 Standard published
Mar 25, 2020