For pool sanitation, bromine compounds are sold in two solid forms - a two-part system that uses a bromide salt dissolved in water and activated by addition of a 
(bromine compounds; are sold; ) (a two-part system; uses; a bromide salt dissolved in water and activated by addition of a) (a bromide salt; dissolved; L:in water)
bromine compounds a two-part system a bromide salt
are sold uses dissolved
a bromide salt dissolved in water and activated by addition of a
L:in water