Sustainable procurement can be a powerful tool in the drive towards more sustainability in the Electronics supply chain. As public institutions purchase large quantities of computers and other hardware, they potentially have a large influence on the working conditions, human rights and environmental issues in all phases of the production of these products. This guide (in Dutch) offers practical guidance to professional purchasers to consider sustainability criteria in all phases of a public tender, with an emphasis on the social criteria. The guide is published as part of the Procure IT Fair campaign.