Jednako obrazloženje i zahtjevi za dvostruku analizu za kontrolu pragova za pokretanje postupka kao u bilješci 2. za najveće dopuštene količine.
„Guidance Document on Measurement Uncertainty for Laboratories performing PCDD/F and PCB Analysis using Isotope Dilution Mass Spectrometry“ (http://ec.europa.eu/food/safety/animal-feed_en), „Guidance Document on the Estimation of LOD and LOQ for Measurements in the Field of Contaminants in Feed and Food“ (http://ec.europa.eu/food/safety/animal-feed_en).