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The ionic composition of sea water is as follows:

	55.1%	Chloride (Cl-)
1	30.6%	Sodium (Na+)
2	7.7%	Sulfate (SO42-)
3	3.7%	Magnesium (Mg2+)
4	1.2%	Calcium (Ca2+)
5	1.1%	Potassium (K+)
6	0.4%	Bicarbonate (HCO3-)
7	0.2%	Bromide (Br-)
8	0.1%	Borate (BO33-)

The input water (brine or groundwater) is pumped into evaporation ponds where water is evaporated through the action of the sun and wind. As the salt water or brine solution concentrates, it reaches a point where the dissolved salts start precipitating out of solution. The salt then crystallises out of solution base upon their solubility. Solar salt field operators manage the brine to ensure that a high proportion of the sodium chloride salt is deposited in crystalliser pans. The quantity of salt that can be produced varies based upon the input water concentration, area of ponds, evaporation and rainfall. The deposited salt is normally harvested annually.