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P1705-RT Diquat, paraquat and acidic herbicides in chia seeds


Ring test P1705-RT is designed to cover

  • phenoxy alkyl carboxylic acids,
  • as well as diquat and paraquat.


Non-crushed (whole) chia seeds
 (min. 100 g) are offered as test material. The test material is spiked with a selection of up to 10 out of the phenoxy alkyl carboxylic acids mentioned below as well as with diquat and paraquat. The corresponding untreated chia seeds (min. 100 g) are available as blank material upon request.

The phenoxy alkyl carboxylic acids below (only the free acids)
are within the scope of P1705-RT:

  • 2,4-D,
  • 2,4-DB,
  • 2,4,5-T,
  • Clopyralid,
  • Dicamba,
  • Dichlorprop,
  • Fenoprop,
  • Fluazifop,
  • Fluroxypyr,
  • Haloxyfop,
  • MCPA,
  • MCPB,
  • Mecoprop,
  • Quinclorac,
  • Quizalofop, and
  • Triclopyr.

The aim of the test is

  • the identification of the phenoxy alkane carboxylic acids.
  • the correct quantification of all parameters with respect to the
    trueness criterion (70-120 % recovery of the spiked level).
  • the correct quantification of all parameters with respect to the
    comparability criterion (z-score ≤ |2|).

Time schedule:

  • Please register before:
    January 31, 2017
  • Dispatch of samples:
    April 24, 2017
  • Deadline for reporting results:
    May 9, 2017

The participation fee is 690 EUR, blank material is available at a price of 70 EUR. The test material is shipped by express courier. Shipping costs are included for shipment to EU countries. Additional shipping costs may apply for shipment to Non-EU countries.