The primary obstacle that museums around the Mediterranean Basin face when trying to preserve their metals collections comes from our atmosphere—the high relative humidity of the Mediterranean and the many aggressive agents that cause metal degradation, such as chloride salts. Furthermore, these conditions may vary and individual museums must tailor their conservation strategies to their own situations.
To make it even more challenging for museums, the vast number of artifacts in their metals collections and the high cost of repeated maintenance makes it impossible to simply place their collections in environmentally controlled areas or treat them regularly with protective coatings.
The costs are simply prohibitive. Furthermore, many artifacts are contaminated with soluble salts, such as chlorides, and can only be saved by a lengthy and expensive process that involves a thorough analysis, documentation, stabilization treatment, and finally choosing a suitable protection system such as with a corrosion inhibitor and/or a coating.