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

P2602-MRT Collecting field samples

P2602-MRT

Collecting field samples


P2605-MRT MOSH/MOAH in fish oil (LC-GC-FID and GCxGC-FID)

P2605-MRT

MOSH/MOAH in fish oil (LC-GC-FID and GCxGC-FID)


P2616-RT Polar pesticides in papaya

P2616-RT

Polar pesticides in papaya

New reference materials

P2512-RMFe Fennel seeds - acidic herbicides (incl. esters and glucosides)

P2512-RMFe

Fennel seeds - acidic herbicides (incl. esters and glucosides)


P2512-BLFe Fennel seeds - blank

P2512-BLFe

Fennel seeds - blank


P2502-RMCo Cocoa butter - MOSH and MOAH (spiked)

P2502-RMCo

Cocoa butter - MOSH and MOAH (spiked)

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