Full Description ADOPTED_FROM:EN 16682:2017 This European Standard is a guide specifying adequate methodologies to be used for the measurement of the moisture content in materials of movable or immovable, outdoor or indoor, cultural heritage for conservation purposes. It is intended to assist users in the choice of the most appropriate system to obtain a reliable measurement in the respect of conservation needs. It indicates how moisture content can be directly or indirectly measured, i.e. distinguishing between non-contact and contact, non-invasive and invasive, non-destructive and destructive methodologies, when they are acceptable and when they are not, from the viewpoint of conservation. Advantages and disadvantages of each measuring system are illustrated. Uncertainties and factors that may affect readings and their interpretation are presented for each measuring system. This European Standard will provide advice and support in this complex matter.