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    unit:PPB
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    http://qudt.org/vocab/unit/PPB

    Recommended prefix

    Copy 'PREFIX unit: <http://qudt.org/vocab/unit/>'

    unit:

    lang:en
    Parts per billion
    lang:""
    Dimensionless unit for concentration. Recommended practice is to use specific units such as \(ug/l\).
    lang:""
    0.000000001
    lang:""
    http://aurora.regenstrief.org/~ucum/ucum.html#section-Derived-Unit-Atoms
    lang:""
    ppb
    lang:""
    [ppb]