Abstract
On 23 November 2023 the announcement of the 18th European Commission's Proficiency Test on Cereals and Feed (EUPT-CF18) was published on the EURL website, together with the Calendar and the Pesticide Target List including all compounds that could potentially be present in the Test Item. The Target Pesticides List included 170 individual compulsory compounds and 63 voluntary requiring the use of multi residue methods (MRMs), along with a minimum required reporting level (MRRL) stipulated for each compound. Links to The General Protocol containing information (Annex 1) that is common to all EUPTs, the Specific protocol (Annex 2), as well as a list of labs that are obliged to take part in the EUPT-CF18, were provided via the homepage. Laboratories were able to register online from December 2023 to 18 of March 2024. In total 103 laboratories from EU and EFTA countries agreed to participate in the test as well as 13 laboratories from EU-Candidate States and Third Countries.
The wheat straw were sprayed in the field with 14 pesticides. The cultivation was performed in 2023 in Denmark by the Danish Centre for Food and Agriculture at Aarhus University. After analyses of the pesticide residues content, it was decided to not apply additional spiking on the test material as the pesticides levels in the treated material was high.
The pesticides employed for the field treatment were selected by the EURL-CF and the EUPT quality control group. The application rates and harvest intervals chosen were based on previous experience and data from supervised residue trials. The test material was checked for homogeneity before shipping to participants. Furthermore, the stabilities of the pesticides in the Test Item were checked several times during the period of time allowed for laboratories to complete the PT exercise.
The participating laboratories were provided with 40 g portions of the wheat straw. The Test Items were shipped to participants on 8 April 2024 and the deadline for submission of results to the Organiser was the 6 May 2024. The deadline for submission of additional information for false negative results was the 15 May 2024. The participants were asked to analyse the Test Item and report the concentrations of any pesticide residues found that were included in the Target Pesticide List (Appendix 1). Submission of results was performed online via the DTU Webtool.
The wheat straw were sprayed in the field with 14 pesticides. The cultivation was performed in 2023 in Denmark by the Danish Centre for Food and Agriculture at Aarhus University. After analyses of the pesticide residues content, it was decided to not apply additional spiking on the test material as the pesticides levels in the treated material was high.
The pesticides employed for the field treatment were selected by the EURL-CF and the EUPT quality control group. The application rates and harvest intervals chosen were based on previous experience and data from supervised residue trials. The test material was checked for homogeneity before shipping to participants. Furthermore, the stabilities of the pesticides in the Test Item were checked several times during the period of time allowed for laboratories to complete the PT exercise.
The participating laboratories were provided with 40 g portions of the wheat straw. The Test Items were shipped to participants on 8 April 2024 and the deadline for submission of results to the Organiser was the 6 May 2024. The deadline for submission of additional information for false negative results was the 15 May 2024. The participants were asked to analyse the Test Item and report the concentrations of any pesticide residues found that were included in the Target Pesticide List (Appendix 1). Submission of results was performed online via the DTU Webtool.
| Original language | English |
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| Publisher | DTU National Food Institute |
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| Number of pages | 100 |
| ISBN (Print) | 978-87-7586-048-7 |
| Publication status | Published - 2024 |