In the QS scheme, approved laboratories regularly inspect the compliance of the participating businesses with QS requirements within the framework of various monitoring programmes. The experience and responsibility of laboratory personnel play a key role in this process. They test the submitted samples for environmental toxins, residues of plant protection products, mycotoxins or heavy metals as well as for hygiene parameters like salmonella contamination.

QS-approved laboratories continuously prove that they are in a position to sustainably provide their services in line with consistently high standards by regularly participating in laboratory performance assessments organised by QS as well as external round robin tests.

Relevant documents

You can find the documents for your participation in the QS scheme here:

Becoming a QS-approved laboratory

Laboratories who want to carry out tests in the QS scheme require QS approval. One of the preconditions for this is accreditation in accordance with EN ISO/IEC 17025.

If you would like to obtain QS approval for your laboratory, please feel free to contact us.

Auswertungen im Labor

Residue monitoring


Feed monitoring


Salmonella monitoring



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Point of contact for questions and recommendations

Claudia Rotter

+49 (0) 228 35068-292

+49 (0) 228 35068-16292

Email contact

Kristina Krautz

+49 (0) 228 35068-297

+49 (0) 228 35068-16297

Email contact