uses of copper sulphate crystals
1 Copper sulfate crystals is still used today dissolved in water in a foot bath for sheep to pass through as a prevention and cure for foot rot. 2  School Projects-Growing crystals of Copper Sulfate is one of the more common science projects for middle school and high school children. (You can swim right away). 2  Copper sulfate pentahydrate is a fungicide. 3  However, some fungi are capable of adapting to elevated levels of copper ions. 4  Mixed with lime it is called Bordeaux mixture and used to control fungus on grapes, melons, and other berries.