commiss regul ec januari amend regul eec lai method analysi technic provis applic export procedur good cover annex ii treati commiss european commun regard treati establish european commun regard council regul eec juli tariff statist nomenclatur common custom tariff amend commiss regul ec articl thereof order ensur good subject council regul ec receiv uniform treatment export commun provis commiss regul eec determin milk fat amend studi test carri laboratori respons test procedur laid articl measur provid regul accord opinion custom code committe tariff statist nomenclatur section adopt regul articl articl regul eec replac text milk fat content purpos determin milk fat content method base extract light petroleum preced hydrolysi hydrochlor acid ga chromatographi methyl ester fatti acid presenc milk fat detect percentag proport thereof calcul multipli percentag concentr methyl butyr multipli product total percentag fat content weight good divid articl regul enter forc st dai public offici journal european commun regul bind entireti directli applic member state brussel januari commiss mario monti member commiss oj oj oj oj