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Tropane alkaloids in herbal tea (P1809-MRT)

Ring test P1809-MRT is a method ring test, designed to cover the most relevant tropane alkaloids in food. A method ring test means, the participants are asked to report details of the applied analytical methods in addition to the analytical results. These data, anonymised and summarised in a report, help to identify shortcomings and to enhance the quality of the applied methods. For reasons of fairness, only laboratories that provide details of the analytical method receive the summary of the analytical methods later on. 

Tropane alkaloids within the scope of the test are all compounds listed in table 2 (p. 23) of the
EFSA Supporting publication 2016:EN-1140.


Up to 10 out of the mentioned tropane alkaloids are spiked to each of the test materials. 

Herbal tea (powder, spiked, min. 50 g) is offered as test material. 

The cereal based food for young children (homogenate, spiked, min. 100 g) is not provided due to a too low interest of the laboratories in this kind of matrix.

The analytical data are assessed with respect to

  • the comparability (z-score), and
  • the trueness (70 to 120% of the spiked level).

Expected time schedule

  • Registration is open until:
    March 15 2018
  • Dispatch of samples:
    June 18, 2018
  • Deadline for reporting results:
    July 5, 2018

Participation fee
710 EUR Participation in the ring test, test material herbal tea and shipment.
  70 EUR Blank material herbal tea (optional).

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. Please feel free to
contact us and we will prepare an individual quote. 

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.