This European Standard was approved by CEN on 7 November 2009. The European Standard EN 15802:2009 has status of the Standard of Republic Italy. 24 p. This European Standard specifies a method for the measurement of the static contact angle of a water drop on porous inorganic materials used for and constituting cultural property. The method may be applied to porous inorganic materials either untreated or subjected to any treatment or ageing