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       #Post#: 584--------------------------------------------------
        water hardness
   DIR By: Amolnimbalkar7
       Date: August 30, 2012, 3:46 am
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       [right][/right]
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       What is mean by hardness of water?their types ?which element
       responsible for hardness how can we remove?
       #Post#: 600--------------------------------------------------
       Re: Treatment of water
   DIR By: Michel
       Date: September 2, 2012, 4:08 pm
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       Some info can be found in this thread:
  HTML http://www.chemplanet.org/online-resource-materials/staright-forward-questions/
       #Post#: 638--------------------------------------------------
       Re:  water hardness
   DIR By: Chris
       Date: September 10, 2012, 10:13 am
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       Water hardness is due to the presence of dissolved Ca and Mg
       salts. Temporary hardness is caused by dissolved bicarbonates.
       Permanent hardness is caused by dissolved sulfates of these two
       elements
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