Its precise workings aren't public, but they use a chemical process similar to the one that causes salt to absorb moisture from the air (and clump up your saltshaker).
Here, a saltshaker filled with six different types of salt.
My last job was to climb into the bomb bay and remove those three testing plugs, painted green and each about the size of a saltshaker.
Salt intake physiologically set in humans, study finds DAVIS — Don’t toss your saltshaker out just yet. A new study led by scientists affiliated with the University of California, Davis, adds further credence to the notion that concern about the amount of salt you consume may be misplaced.
Aug. 26, 2013 - UC Newsroom
Salt intake physiologically set in humans, new study finds Don’t toss your saltshaker out just yet. A new study led by scientists affiliated with the University of California, Davis, adds further credence to the notion that concern about the amount of salt you consume may be misplaced. The study documents in humans what neuroscientists have reported for some time: animals’ sodium (salt) intake is controlled by networks in the brain and not by the salt ...
Aug. 26, 2013 - UC Davis News & Information