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Dithiocarbamates in apple and apricot (P1911-RT)

Picture grapes and lettuce

Our improved preparation process minimises the degradation of dithiocarbamates during the preparation of the test materials. In previous ring tests we were able to provide a spiked test material where the recovery of the spiked level around 100 %. Please feel free to refer to the archive for more information. 

Ring test P1911-RT related to dithiocarbamates is performed in October 2019.

Two spiked test materials are provided. The test materials consist of 80 g of an apple resp. apricot homogenate.

The aim of the ring test is

  • the correct quantification with respect to the
    trueness criterion
    (70-120 % recovery of the spiked level,
    as far as scientific reasonable).
  • the correct quantification with respect to the
    comparability criterion
    (z-score ≤ |2|). 


Time schedule:

  • Registration is open until:
    1 September 2019
  • Dispatch of samples:
    15 October2019
  • Deadline for reporting results:
    25 October 2019


Participation fee:

890 EUR for the participation and the two test materials
  70 EUR for each of the blank materials (optional)


The test materials are shipped by express courier. Shipping costs are included for shipment to EU countries. Due to the low stability of the dithiocarbamates and the short time for analysis the participation is limited to laboratories from Europe.

Please feel free place your orders via the Order/login section on the website.

Note: PROOF-ACS reserves the right to cancel tests in case of less than ten participants.