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Pesticide multi-method - fresh herbs (P1511-RT)

PROOF-ACS organised and performed a ring test related to pesticides in fresh herbs in July 2015. Nine laboratories across four European countries took part. All laboratories applied a multi-method approach to quantify pesticides in the fresh herbs.

Two test materials were offered: 

  • fresh rosemary (homogenate)
    spiked with nine pesticides:
    difenoconazole, fludioxonil, imidacloprid, indoxacarb, linuron, mandipropamid, metalaxyl, pendimethalin, and propyzamide.

  • fresh parsley (homogenate)
    spiked with ten pesticides: 
    chlorpropham, lambda-cyhalothrin, dimethomorph, ethofumesate, iprodione,
    propamocarb, prosulfocarb, pyraclostrobin,
    terbuthylazine, and vinclozolin

Neither the number of pesticides nor their identity was announced to the participants in advance. All spiked pesticides are within the scope of a common pesticide multi-method.

Each participant received a report after the evaluation of the analytical results.

The report contains an assessment related to:

  • the identification of the spiked pesticides,
  • the correct quantification with respect to the 
    trueness criterion (70-120 % recovery of the spiked level), and
  • the correct quantification with respect to the 
    comparability criterion (z-score ≤ |2|).

A summary of the report is available here


The time schedule was: 

  • Dispatch of samples:
    June 29, 2015
  • Sample arrival (in the laboratory):
    June 30/July 1, 2015
  • Deadline for reporting results:
    July 14, 2015


Participation fee:
Test material rosemary and general costs for the organisation of the test 690 EUR,
Additional test material parsley 300 EUR,
Blank materials (rosemary/parsley) 70 EUR each.