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 green 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.