A partir du 01/01/2016, tant le vendeur que l'utilisateur devront disposer des connaissances nécessaires relatives à l'utilisation correcte des produits biocides relevant du circuit restreint, et devront assurer la formation de leur personnel ou des personnes travaillant pour eux.	Since 1 January 2016 both sellers and users have to possess the required knowledge on the correct use of closed circuit biocides, and they are responsible for training their staff or the people working on their behalf.