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

P2426-RT Multi-method pesticides in hemp (cannabis) leaves

P2426-RT

Multi-method pesticides in hemp (cannabis) leaves


P2410-RT Pyrrolizidine alkaloids in chamomile tea

P2410-RT

Pyrrolizidine alkaloids in chamomile tea


P2416-RT Multi-method pesticides and polar pesticides in soy bean meal (feed)

P2416-RT

Multi-method pesticides and polar pesticides in soy bean meal (feed)

New reference materials

P2428-RMOr Orange - acidic herbicides (incl. esters and glucosides) and o-phenylphenol (as glucoside)

P2428-RMOr

Orange - acidic herbicides (incl. esters and glucosides) and o-phenylphenol (as glucoside)


P2428-BLOr Orange - blank

P2428-BLOr

Orange - blank


P2419-RMGg Guar gum - 2-chloroethanol, PCP

P2419-RMGg

Guar gum - 2-chloroethanol, PCP

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