The attention for circular buying increases. Completely in line with the Cradle to Cradle (C2C) ambition of the city of Venlo, circular principles are included in procurement procedures. Bas van de Westerlo will show several practical examples of this during his workshop. Of course, during the realisation of a project you will encounter several challenges. How do you deal with certificates in your application? How do you translate circularity in selection or award criteria. This workshop will zoom in on these issues.