In 2018, The OECD Residue Chemistry Expert Group (RCEG) convened a writing subgroup to update the OECD Guidance Document on the Definition of Residue for pesticides. The current guidance was published in 2009, and a polling of OECD member countries indicated a desire for significant revisions to the document to meet the needs of both data generators and regulatory evaluators for consistent and predictable outcomes for residue definitions for compliance with MRLs and for risk assessment. The writing group consists of residues experts and toxicologists from national registration authorities and the agrochemical industry, with inclusion of experts from JMPR and JECFA. The talk will discuss the ongoing work of the group, including specific topics of consideration, progress and next steps, and, to the extent possible, a preview of the recommended approaches.

Residue Definitions: An Update from the OECD residue chemistry expert group

ACS Fall 2021

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