P2314-RT

Polar pesticides/contaminants in green tea

Ring test P2314-RT is designed to cover the most frequent polar pesticides and contaminants in green tea. 

The test material consists of black tea (milled, 100 g), spiked with

  • anthraquinone,
  • biphenyl,
  • chlorate and perchlorate,
  • nicotine,
  • glyphosate, AMPA, and trimesium,
  • diquat and paraquat,
  • matrine and oxymatrine, and
  • ethylene oxide/2-chloroethanol.

The basic module (anthraquinone, biphenyl, chlorate, perchlorate, and nicotine) is included in the price of the ring test. The participants are free to choose the additional modules glyphosate, AMPA, and trimesium (module 1), diquat and paraquat (module 2), matrine and oxymatrine (module 3), and ethylene oxide (module 4). 

The analytical data are assessed with respect to

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

Parameters

Basic module

anthraquinone, biphenyl, chlorate, perchlorate, nicotine

Module 1

glyphosate, AMPA, trimesium

Module 2

diquat, paraquat

Module 3

matrine, oxymatrine

Module 4

ethylene oxide, 2-chloroethanol, ethylene oxide (sum)

Expected time schedule

Please register before:
15 March 2023
Dispatch of samples:
12 June 2023
Deadline for reporting results:
05 July 2023

Costs of P2314-RT

Ring test and material Amount Price per unit
Polar pesticides/contaminants in green tea 780 €
Test material
Green tea, milled, spiked.
100 g included
Basic module
anthraquinone, biphenyl, chlorate, perchlorate, nicotine
included
Module 1
glyphosate, AMPA, trimesium
200 €
Module 2
diquat, paraquat
200 €
Module 3
matrine, oxymatrine
200 €
Module 4
ethylene oxide
150 €
Blank material
Green tea, milled, unspiked.
included

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