Multi-method pesticides in concentrated orange juice

A concentrated orange juice is provided as test material. The concentrated juice is spiked with up to 15 pesticides, which are covered by common pesticide multi-residue methods. The scope of the ring test is available here.

The analytical data are assessed with respect to

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