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

P2606-MRT MOSH/MOAH by GCxGC-TOF-MS

P2606-MRT

MOSH/MOAH by GCxGC-TOF-MS


P2609-RT Pyrrolizidine alkaloids in sage

P2609-RT

Pyrrolizidine alkaloids in sage


P2617-RT Polar pesticides in sesame seeds

P2617-RT

Polar pesticides in sesame seeds

New reference materials

P2510-RMPe Pear - pesticides, which require special treatment (hydrolysis)

P2510-RMPe

Pear - pesticides, which require special treatment (hydrolysis)


P2510-BLPe Pear - blank

P2510-BLPe

Pear - blank


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

P2512-RMFe

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

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