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Water softener
01
a device that removes minerals, such as calcium and magnesium, from hard water to make it soft and more suitable for household use
02
a substance (such as sodium chloride) that lessens the hardness of water by replacing calcium and magnesium ions with sodium ions and so gives the water more efficient sudsing power
Example
Zeolites are silicate minerals used in water softeners and as catalysts in chemical reactions.
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