| http://www.w3.org/ns/prov#value | - Where greater control over the concentrations of each of the carbonate and bicarbonate ions and calcium and/or magnesium ions is required, the concentrations of each of these ions can be modified separately such as by separate addition of sodium or potassium bicarbonates or carbonates and sources of calcium and/or magnesium ions or solutions thereof to the slurry.
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