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

P2102-MRT MOSH/MOAH in infant formula

P2102-MRT

MOSH/MOAH in infant formula


P2103-MRT MOSH/MOAH in pepper (spice)

P2103-MRT

MOSH/MOAH in pepper (spice)


P2106-RT Acidic herbicides (free acids, esters and conjugates) in grapefruit

P2106-RT

Acidic herbicides (free acids, esters and conjugates) in grapefruit

New reference materials

P2121-RMTea Black tea - pesticides

P2121-RMTea part of rolling proof

Black tea - pesticides



P2124-RMSe Sesame seeds - multi-method pesticides, glyphosate, diquat, paraquat

P2124-RMSe

Sesame seeds - multi-method pesticides, glyphosate, diquat, paraquat

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