Pesticides, polar pesticides and copper in liquid fertilizers

Contamination of liquid fertilizers with (polar) pesticides and copper are described in literature. The most common pesticides are covered by the test.

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).

This ring test is not included in the scope of our accreditation yet. Independent from our scope of accreditation, all ring tests are organised and performed in accordance with the requirements of DIN EN ISO 17043:2023.