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    Hippiefeet's Avatar
    Hippiefeet Posts: 60, Reputation: 4
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    #1

    Feb 26, 2008, 07:37 PM
    Math on fluoride
    If Fluoride has a ratio of 3.73 ppm in brewed black tea how many milligrams would be in a given amount?
    robkelly2242's Avatar
    robkelly2242 Posts: 57, Reputation: 0
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    #2

    Feb 27, 2008, 12:21 AM
    One ppm is 1 mg/liter. Do the math.
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