ISO 3890-1|IDF 75-1:2009 describes general considerations and specifies extraction methods for the determination of residues of organochlorine pesticides in milk and milk products.

A method for high-fat products is specified in an annex.

Guidance is given on the conduct of analyses in the presence of polychlorinated biphenyls (PCBs) in another annex.

The methods are applicable to: alpha-HCH; beta-HCH; gamma-HCH; aldrin/dieldrin; heptachlor and heptachlorepoxide; isomers of DDT, DDE, TDE; chlordane and oxychlordane; and endrin. Certain methods are applicable to delta-ketoendrin and HCB.