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    rajiniganth's Avatar
    rajiniganth Posts: 1, Reputation: 1
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    #1

    Dec 15, 2011, 09:18 PM
    Total hardness calculation formula?
    I need a formula for total hardness calculation
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Dec 19, 2011, 07:07 AM
    You actually have to test the water with chemicals (substances, or chemical strips of paper, or the likes) or special meters first...
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