June 3rd
American inventor Emmett Joseph Culligan died on this day in 1970
He invented the Culligan water softener system that made water softening available to home users. These systems reduce the amount of calcium (Ca), magnesium (Mg) and other metal cations found in hard water. He founded the Culligan international water treatment products company in 1936.
Source : www.rsc.org/learn-chemistry/collections/chemistry-calendar
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