This EFSA Guidance Document on the Assessment of the Equivalence of Technical Materials of Substances Regulated under Regulation (EC) No 1107/2009 (PPP) is intended to establish a harmonised procedure for assessing the equivalence of different sources of technical material versus the reference source according to the provisions stipulated in Article 38 of Plant Protection Products Regulation (EC) No 1107/2009.
In this document a two-tiered approach is proposed in order to assess the equivalence of different sources of technical materials. If equivalence cannot be established on the basis of the Tier I data, further mammalian toxicity/ecotoxicity consideration is necessary which will form the requirements of Tier II.
efsa_pesticides_ppp_technical_equivalence_assessment_201207.pdf