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

P2604-MRT MOSH/MOAH in edible oils (LC-GC-FID and GCxGC-FID)

P2604-MRT

MOSH/MOAH in edible oils (LC-GC-FID and GCxGC-FID)


P2624-RT Pesticides in hemp leaves

P2624-RT

Pesticides in hemp leaves


P2621-RT/P2622-RT Multi-method pesticides in celery and kaki (part of rolling proof)

P2621-RT/P2622-RT part of rolling proof

Multi-method pesticides in celery and kaki (part of rolling proof)

New reference materials

P2507-RMCu Cumin - pyrrolizidine alkaloids, tropane alkaloids

P2507-RMCu

Cumin - pyrrolizidine alkaloids, tropane alkaloids


P2507-BLCu Cumin - blank

P2507-BLCu

Cumin - blank


P2518-RMGr Grapes - polar pesticides, bromide

P2518-RMGr

Grapes - polar pesticides, bromide

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