Metallography and Microstructure: a Summer School Course in Ancient and Historic Metals.
By Gerhard Eggert
Saturated aqueous salt solutions (water containing the maximum amount of a salt soluble) have been used to create a fixed relative humidity (RH) in display cases. Museum handbooks from the ‘70s and ’80s—including those by Thomson or Stolow—devote some pages to their use. The last article on these salt solutions’ practical use appeared in 1991, and then there was nothing more. Why?
» Source: International Institute for Conservation of Historic and Artistic Works