Polar pesticides in papaya

The basic module (chlorate, perchlorate, ethephon, phosphonic acid) is included in the price of the ring test. The participants are free to choose the additional modules related to amino alcohols (module 1), diquat and paraquat (module 2), quaternary ammonium compounds (module 3), DFA and TFA (module 4), and/or inorganic bromide (module 5).

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 applicable).

Parameters

Basic module

chlorate, perchlorate, ethephon, phosphonic acid

Module 1

morpholine, diethanolamine, triethanolamine

Module 2

diquat, paraquat

Module 3

BAC C-8, BAC C-10, BAC C-12, BAC C-14, BAC C-16, BAC C-18, DDAC C-8, DDAC C-10, DDAC C-12

Module 4

difluoroacetic acid (DFA), trifluoroacetic acid (TFA)

Module 5

inorganic bromide

Expected time schedule

Please register before:
31 January 2026

Dispatch of samples:
13 April 2026

Deadline for reporting results:
29 April 2026

Costs of P2616-RT

Ring test and material	Amount	Price per unit
Polar pesticides in papaya	–	750 €
Test material Papaya, homogenised, spiked	150 g	included
Basic module Chlorate, perchlorate, ethephon, phosphonic acid.		included
Module 1 aminoalcohols.		200 €
Module 2 diquat, paraquat.		200 €
Module 3 quaternary ammonium compounds (BAC, DDAC).		200 €
Module 4 difluoroacetic acid (DFA), trifluoroacetic acid (TFA).		200 €
Module 5 inorganic bromide.		150 €
Blank material Papaya, homogenised, unspiked.		70 €

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