Adjuvants are defined in Commission Regulation (EC) No. 1107/2009 Article 2 (3) d, as substances or preparations which includes co-formulants or preparations with one or more co-formulant(s), and in the form in which they are delivered to the user and placed on the market with the purpose of being mixed by the user with a plant protection product in order to increase its impact or other pesticidal properties. Its impact is not to be interpreted in the sense of that of a safener/synergist. Adjuvants are products which are applied as a tank mix with plant protection products and which improve, for example, wetting or the adhesion of plant protection products, or which prevent foaming.
Download: Provisions concerning placing adjuvants on the market, and approval procedure (PDF)