New guidance on stereoisomers will be adopted in GB from 1 January 2024 In July 2019 the European Food Safety Authority (EFSA) published new guidance on risk assessment for PPPs and active substances containing stereoisomers as components or impurities. From August 2021 this guidance has applied in NI. Following detailed consideration HSE has concluded that it is appropriate to adopt the EFSA 2019 guidance for the relevant GB assessments, with a number of modifications to meet the needs of GB. Applicants are encouraged to use this guidance for their assessments from this point forwards. From 1 January 2024 relevant applications must use this guidance. View guidance on assessment of stereoisomers If you have any questions relating to this ebulletin, pleasecontact us. | 
