According to key bibliography in the field of conservation, the primary factor that needs to be controlled in a museum environment is Relative Humidity (RH). The desirable levels of relative humidity typically range between 50% and 60%, as this range presents the fewest dangers for most materials. The present study aims to control the Relative Humidity by using saturated salt solutions inside a sealed museum case, in order to balance its microenvironment. A number of experiments were conducted in order to study the both effectiveness and the benefits of these solutions. The outcomes verify the excellent performance of the salts.