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    Nazulaihat Hamz's Avatar
    Nazulaihat Hamz Posts: 1, Reputation: 1
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    #1

    Jun 25, 2012, 03:16 PM
    Hardness of water
    How to calculate hardness of water in ppm?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Jun 25, 2012, 10:01 PM
    If you don't have any chemistry apparatus nor standard solutions for the test, you can buy a water hardness meter/test kit/tester.
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