WEPAL / QUASIMEME is part of Wageningen University and Research and organises routine laboratory performance studies for chem ... ical measurements in the terrestrial, aquatic and marine environment. We offer nine worldwide accredited proficiency testing programmes including soil, plants, sediments (freshwater and marine), seawater, biota, shellfish toxins, manure & compost and biomass. WEPAL / QUASIMEME is accredited according to ISO 17043 by the Dutch Accreditation Council RvA a co-signatory to the ILAC and IAF Multilateral Agreements. read more