This European Standard defines the requirements for test waters used in the dynamic test rig defined in EN 15664-1. This document specifies test water(s) when the test procedure is used to: a) assess a material for approval as a reference material for a category of materials; b) assess a material for approval by way of comparative testing; c) obtain data on the interaction of local water with a material. NOTE Local waters used for test waters are not treated with corrosion inhibitors.