Revised Draft Test Guideline 506 for Stability of Pesticide Residues in Stored Commodities

The project included a questionnaire to collect additional input for amending certain sections and developing new text. The main changes in the revised Test Guideline are as follows: The test procedure for storage stability studies has been clarified. Plant matrix groups have been rearranged and their number reduced from five to four. Commodities have been attributed to the updated matrix groups in a detailed table, which is available in Annex B and contains both, processed and unprocessed commodities of plant origin. Bee and fish matrices have been added to the document. Extrapolation rules and the number of studies required in different situations have been clarified. Guidance on the interpretation of study results, which was explicitly required during the survey, has been compiled in the new Annex A, illustrated by a couple of examples. The chapter “Data reporting” starting from “Administrative data” and ending with “Applicant’s Summary and Conclusion” was changed to make it compatible with the structure of the OHT 85-5 (by using the same headers used there).