Conservation of Cultural Heritage. Methods and materials for cleaning porous inorganic materials Ingestion-build-78747 BS EN 12697‑44 specifies the

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Conservation of Cultural Heritage. Methods and materials for cleaning porous inorganic materials Ingestion-build-78747 BS EN 12697‑44 specifies theWhat is BS EN 17138 Methods and materials for cleaning porous inorganic materials of cultural heritage about? BS EN 17138 provides the guidelines for the choice of the operational cleaning technical specifications to optimize the cleaning operation. The fundamental requirements for each specific cleaning method are given to adapt cleaning works for single specific cases. The objective of cleaning may consist of removal of any combination of unwanted