Active substances to be used as plant protection products are assessed and authorised at Community level under Directive 91/414, which established a harmonised framework for the authorisation and placing on the market of plant protection products.
Direktiiviga 91/414, millega loodi taimekaitsevahendite lubamist ja turuleviimist käsitlev ühtlustatud raamistik, hinnatakse ühenduse tasandil taimekaitsevahendites kasutatavaid toimeaineid ja antakse luba nende kasutamiseks.