Facing analytical quality.

Compe­tence schemes

beyond beaten paths and tailored to your needs

rolling proof

comprehensive quality monitoring of multi-residue methods

Reference materials

for up-to-date parameters

Next ring tests

P2401-MRT MOSH/MOAH in edible oils (quantification)

P2401-MRT

MOSH/MOAH in edible oils (quantification)


P2418-RT Nitrate in spinach

P2418-RT

Nitrate in spinach


P2421-RT/P2422-RT Multi-method pesticides in spinach and blueberry (part of rolling proof)

P2421-RT/P2422-RT

Multi-method pesticides in spinach and blueberry (part of rolling proof)

New reference materials

P2402-RMIf Infant formula - MOSH and MOAH (spiked)

P2402-RMIf

Infant formula - MOSH and MOAH (spiked)


P2402-BLIf Infant formula - blank

P2402-BLIf

Infant formula - blank


P2316-RMPi Pineapple - polar pesticides

P2316-RMPi

Pineapple - polar pesticides

Birgit Schindler

About PROOF-ACS

PROOF offers high-quality, up-to-date competence schemes, tailored to customers’ needs. We always go the extra mile for providing reliable services: Careful selection of test parameters, concentration levels and choice of matrix are core to the design of PROOF competence schemes. The scientifically based evaluations go far beyond a sole statistical evaluation.

PROOF-ACS was founded in 2012 as a spin-off of „Lach & Bruns Partnerschaft“.

Dr. Birgit Schindler
Analytical Chemist
Fachtoxikologin DGPT
European Registered Toxicologist