6.3.2.2. Regulating incubator relative humidity for maintaining adult workers in the laboratory using a saturated salt solution

If an open basin of water cannot maintain the incubator at the desired condition, then further regulation can be provided using saturated salt solutions. Use of these salts is summarized here, but discussed in further detail by Wexler and Brombacker (1951) and Winston and Bates (1960).
The BEEBOOK