Parts per billion (ppb) is a unit of concentration, while microliter (μL) is a unit of volume. To convert ppb to microliters, you need to know the density of the substance in question. The formula for this conversion is: microliters = (ppb * volume in liters) / density in g/mL. This formula takes into account the concentration of the substance in ppb and its density to give you the volume in microliters.
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You cannot. A microlitre is a measure of volume with dimensions [L3]. ppb is a pure ratio with no dimensions. You cannot convert one to the other.
In order to convert a microliter per liter to a mililiter per liter, just divide by 1,000.
Without more information you cannot.
0.0001
1 liter = 1 000 000 microliter
From largest to smallest... Liter, deciliter, milliliter, microliter