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EFSA PRIMo consumer risk assessment model – Revision 3.1 published

In January 2018, the guidance document on the use of EFSA PRIMo revision 3 was published in the EFSA Journal.  Following feedback from users, the risk assessment tool has been updated, including editorial modifications and corrections of input values used for the calculation of the exposure assessments.

In revision  3.1  of  the  model  the  following  modifications  have  been introduced:

  • A new spreadsheet was added that will allow converting the MRLs derived from the database of the European Commission in a format compatible with the EFSA PRIMo;
  • Correction of a number of large portion consumption data (LP) reported by a Member State;
  • Correction of unit weight data reported by a Member State;
  • Correction of TMDI calculation (supplementary information for risk managers);
  • Correction  of  the  calculation  of  the  threshold  residue  in  processed  products  (IESTI  case  2a and 2b);
  • Editorial modifications.

An analysis of how the modifications impact the results of the risk assessment was performed by EFSA, comparing the results obtained with PRIMo revision 3.1 and PRIMo revision 3. While for the chronic risk assessment the new revision of PRIMo will not impact on the results, the acute risk assessment differs for a number of commodities.

The current version of the risk assessment model and supporting information is available online at

For advice on risk assessment and further information on the registration of plant protection products, biocides or general chemicals, or any other regulatory issues, please contact ERM on +44 (0)1423 520245, or contact us by clicking here.


Published 4th April 2019
Categories Agrochemicals, Links, News
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