BS EN 17138:2018 provides the guidelines for the choice of the operational cleaning technical specifications in order to optimize the cleaning operation. The fundamental requirements for each specific cleaning method are given as to adapt cleaning works for single specific cases.The objective of cleaning may consist of removal of any combination of unwanted materials, such as: degraded protective coatings, surface or near-surface materials, which constitute a present or future threat to conservation, materials which prevent legibility of the object or are disfiguring by nature, deposits which are judged to be incompatible to the historical nature of the object.Cross References:EN 16085EN 16095UNE 41806-5-1EN 16302UNE 41806-2EN 15801UNE 41806-1EN 16853EN 15898UNE 41806-5-2EN 16782EN 16096All current amendments available at time of purchase are included with the purchase of this document.