Polar pesticides/contaminants in green tea

Ring test P2515-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, trimesium,
diquat and paraquat,
matrine and oxymatrine, and
2-chloroethanol / ethylene oxide.

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

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

Expected time schedule

Please register before:
10 January 2025

Dispatch of samples:
17 March 2025

Deadline for reporting results:
07 April 2025

Costs of P2515-RT

Ring test and material	Amount	Price per unit
Polar pesticides/contaminants in green tea	–	850 €
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 / 2-chloroethanol.		200 €
Blank material Green tea, milled, unspiked.	100 g	included

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